PLEASE HELP I INCLUDED A WRITTEN VERSION OF MY PROBLEM I WROTE IT PLEASE HELP!!!

Step-by-step explanation:

Volume = area of end   x   height

            = pi r^2   x 8

           = pi  2^2 * 8    = 32 pi  units^3    <====exact answer

The personal expenses that the Wonders spent more than they had budgeted were Credit Card and Pocket Money.

The personal expenses of the Wonders were Clothing, Credit Card and Pocket Money.

For Clothing, they spent less than the budget of $ 60 by spending $ 31.75. For Credit Card, they overspent the budget because they budgeted $50 but spent $ 60.

For Pocket Money, they again spent more than the budget as the budget was $ 80 but they spent $ 93.75.

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Answer:

Step-by-step explanation:

To calculate how much Gloria will pay over 30 years for her $70,000 mortgage at 7.5%, we need to use the formula for a standard mortgage payment, which is:

P = L[c(1 + c)^n]/[(1 + c)^n - 1]

Where:

P = the monthly payment

L = the loan amount

c = the monthly interest rate (annual interest rate divided by 12)

n = the total number of payments (30 years multiplied by 12 months per year)

First, we need to calculate the monthly interest rate:

c = 7.5% / 12 = 0.00625

Next, we need to calculate the total number of payments:

n = 30 years x 12 months per year = 360

Now we can plug in these values to the formula:

P = 70000[0.00625(1 + 0.00625)^360]/[(1 + 0.00625)^360 - 1]

P = $493.95

Therefore, Gloria will pay $493.95 per month for 30 years for her $70,000 mortgage at 7.5%. Over the course of the 30 years, she will pay a total of:

Total Payments = P x n = $493.95 x 360 = $177,822

So, Gloria will pay a total of $177,822 over 30 years for her $70,000 mortgage at 7.5%.

Answer:

B , D , C

Step-by-step explanation:

the central angle x is equal to the measure of the arc that subtends it, so

x = 90°

similarly

z = 22°

similarly the central angle subtended by arc y° is y°

the 3 angles on the diameter sum to 180° , that is

x + y + z = 180°

90° + y + 22° = 180°

112° + y = 180° ( subtract 112° from both sides )

y = 68°

The option that is a valid claim is:

The number of milk chocolate pieces is between 115 and 120 pieces.

The correct option is the last option.

From the question, we are to determine the valid option about the claim.

From the given information,

A sample of chocolate from the local candy shop contained 17 milk chocolate pieces out of a sample of 50. An entire batch of chocolate contains 350 pieces

To determine the option about the population that is valid claim, we will determine the number of milk chocolate in an entire batch.

We know that

17 are milk chocolate out of a sample of 50.

Let the number of milk chocolate in an entire batch be x.

If there 17 milk chocolate out of 50 samples

Then,

There will be x chocolate out 350 samples

50 × x = 350 × 17

x = (350 × 17)/ 50

x = 119

Thus,

The 119 milk chocolates in an entire batch

The valid claim is:

The number of milk chocolate pieces is between 115 and 120 pieces.

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True. When the normality assumption is violated and the sample size is small. Transforming the dependent variable using the Box-Cox methodology with the suggested Lambda value can help ensure the normality of the sampling distribution.

Normality refers to the distribution of data being normally distributed, while sample size refers to the number of observations in a sample. Sampling refers to the process of selecting a subset of individuals or data points from a larger population.

A variable is any characteristic or attribute that can be measured or observed. The Lambda value is a parameter in the Box-Cox transformation that determines the type of transformation to be applied to the data.

Thus, When normality is violated and the sample size is too small to ensure the normality of the sampling distributions, one option is to try to transform the dependent variable using the Box-Cox methodology using the suggested Lambda value. This transformation can help stabilize the variance and achieve a more normal distribution, making it more suitable for parametric statistical tests.

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The information that can be missing from the dot plot is the scale and data points.

Elias dot plot may not have a distinct scale on the axes, which makes it challenging to identify the precise values or quantities being displayed. This is based on the fundamental idea of a dot plot. A scale offers the required context for correctly analysing the data by, among other things, specifying the measurement intervals or units that were employed.

Furthermore, certain data points, such as the number of tropical fish in each tank or the exact values being displayed, may be absent from the dot plot. It would be difficult to evaluate the dot plot or make inferences from it without the actual data points. Overall, it is impossible to pinpoint exactly what information may be lacking without further detailed details concerning Elias' dot plot.

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The value of 'x' is less than one. Then substitute x = 0.5 for the equation to be true.

Given that:

9 × ___ < 9

Inequality is defined as an equation that does not contain an equal sign. Inequality is a term that describes a statement's relative size and can be used to compare these two claims.

Let 'x' be the number in the blank space. Then we have

9 × x < 9

9x < 9

x < 1

The value of 'x' is less than one. Then substitute x = 0.5 for the equation to be true.

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Answer:

#4 A- Height of trees (needs to be given in digits)

#5 A- 27

#6 D- 10

#7 D

#8 B- 19

#9 C Make a frequency table

Step-by-step explanation:

I'm not too sure, you should ask Brainly too!

The hypothesis test is:
H0: p = 0.224 (the percentage of children who develop asthma is the same in the other country)
Ha: p < 0.224 (the percentage of children who develop asthma is lower in the other country)

The sample proportion is:
p = 71/342 = 0.2076

The standard error is:
SE = sqrt[(0.224)(1-0.224)/342] = 0.0225

The test statistic is:
z = (0.2076 - 0.224) / 0.0225 = -0.7467

The p-value for this one-tailed test is:
p-value = P(z < -0.7467) = 0.2254

Therefore, the test statistic, z = -0.7467 and the p-value = 0.2254.
In this hypothesis test, we are comparing the proportion of children with asthma in another country to the proportion in the US (22.4%). Let's set up our null and alternative hypotheses:

H0: p = 0.224 (proportion of children with asthma in the other country is the same as in the US)
Ha: p < 0.224 (proportion of children with asthma in the other country is lower than in the US)

Now, we can calculate the test statistic (z) and p-value using the provided data:

n = 342 (sample size)
x = 71 (number of children with asthma)
p-hat = x/n = 71/342 = 0.2076 (sample proportion)

We also need the standard error (SE) for the sample proportion:
SE = sqrt((p0 * (1 - p0)) / n) = sqrt((0.224 * (1 - 0.224)) / 342) = 0.0260

Now, calculate the z-score:
z = (p-hat - p0) / SE = (0.2076 - 0.224) / 0.0260 = -0.6285 (rounded to four decimal places)

Next, find the p-value by looking up the z-score in a standard normal table or using a calculator:
p-value = P(Z < -0.6285) ≈ 0.2647 (rounded to four decimal places)

So, the test statistic z = -0.6285, and the p-value = 0.2647.

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To find the value of x, we need to follow these steps:

1. Calculate the total sum of the ages of the 6 cars.
2. Subtract the sum of the known ages from the total sum.
3. The result will be the value of x.

Step 1: Since the average age of the 6 cars is 7 years, we multiply the average (7) by the number of cars (6) to find the total sum of ages.
Total sum of ages = 7 * 6 = 42 years

Step 2: Subtract the sum of the known ages (6, 14, 5, 1, and 8) from the total sum.
Sum of known ages = 6 + 14 + 5 + 1 + 8 = 34 years
42 (total sum of ages) - 34 (sum of known ages) = 8

Step 3: The result is the value of x.
x = 8

So the value of x is 8.

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-16  is the of x in the given expression.

To solve for x in the equation:

16x + 24/4 = -5(2 - 3x)

We can start by simplifying the equation using the order of operations (PEMDAS) and basic algebraic properties.

16x + 6 = -10 + 15x (distribute -5)

6 = -10 - x (move 15x to the left, and 16x to the right)

16 = -x (subtract 6 from both sides)

x = -16 (multiply both sides by -1)

Therefore, the solution to the equation is x = -16.

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The mean exam score of student 2 for all four exams is 87.5.  Based on the information provided, you have a spreadsheet containing the scores of 50 students on 4 different exams. To calculate the mean exam score for Student 2 across all four exams, you need to follow these steps:

1. Locate the scores for Student 2 on all four exams. They should be on the first sheet of the spreadsheet and likely in a row or column corresponding to Student 2.

2. Add the scores of Student 2 for all four exams together. For example, if their scores were 80, 85, 90, and 95, the total would be 80 + 85 + 90 + 95 = 350.

3. To calculate the mean, divide the total score (from step 2) by the number of exams (which is 4 in this case). Using the example scores above, the mean would be 350 / 4 = 87.5.

So, the mean exam score for Student 2 for all four exams is 87.5. Keep in mind that this example assumes hypothetical exam scores; you will need to replace them with the actual scores found in the spreadsheet to obtain the correct mean score for Student 2.

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From Week 3 to Week 5, Gym A membership increases at a rate of 32 people per week,  and Gym B membership increases at a rate of 34 people per week. So, Gym B is growing faster.

The average rate of change of a function is given by the change in the output of the function divided by the change in the input of the function. Hence we must identify the change in the output, the change in the input, and then divide then to obtain the average rate of change.

From Week 3 to Week 5, the change in the input is given as follows:

5 - 3 = 2.

From the table for Gym A and graph for Gym B, the change in the output for each gym is given as follows:

Hence the rates are given as follows:

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Answer:

The estimated proportion of Americans over 45 who smoke is 0.239 or 239/1000.

Step-by-step explanation:

To estimate the proportion of Americans over 45 who smoke, we need to calculate the fraction of the sample who smoke.

The number of people who don't smoke is 631, so the number of people who smoke is:

830 - 631 = 199

Therefore, the fraction of Americans over 45 who smoke is:

199/830 = 0.239 (rounded to three decimal places)

So, the estimated proportion of Americans over 45 who smoke is 0.239 or 239/1000.

To estimate the proportion of Americans over 45 who smoke, we first need to find the number of people in the sample who do smoke. We can do this by subtracting the number of people who don't smoke from the total sample size:
Therefore, we estimate that approximately 0.240 or 24.0% of Americans over 45 smoke.

Step 1: To estimate the proportion of Americans over 45 who smoke, we first need to find out how many people in the sample do smoke. Since we have a sample of 830 Americans and 631 don't smoke, we can subtract the non-smokers from the total sample to find the number of smokers.

830 (total) - 631 (non-smokers) = 199 (smokers)

Step 2: Now, we can calculate the proportion of smokers in the sample by dividing the number of smokers (199) by the total number of people in the sample (830).

199 (smokers) / 830 (total) = 0.2398 (rounded to four decimal places)

As a fraction, this would be approximately 240/1000, which can be simplified to 12/50.

So, the estimated proportion of Americans over 45 who smoke based on the given data is 0.240 or 12/50.

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Based on the information given, we can use the formula for a confidence interval to estimate the population mean paper length with 95% confidence.

The formula is:
Confidence interval = sample mean ± (critical value) x (standard error)
First, we need to calculate the standard error, which measures the variability of the sample mean. The formula for standard error is:
Standard error = standard deviation / √sample size
Plugging in the values given:
Standard error = 0.02 / √100
Standard error = 0.002
Next, we need to find the critical value from the t-distribution table for a 95% confidence level with 99 degrees of freedom (100 samples - 1). This value is approximately 1.984.
Now we can plug in all the values into the confidence interval formula:
Confidence interval = 10.998 ± (1.984) x (0.002)
Confidence interval = 10.994 to 11.002
Therefore, we can estimate with 95% confidence that the population mean paper length is between 10.994 inches and 11.002 inches. It is possible that the production process has changed and the paper length is no longer exactly 11 inches.

To construct a 95% confidence interval estimate for the population mean paper length given the production process, mean length, and sample paper length of 10.998 inches, follow these steps:
1. Identify the given values:
Sample mean (X) = 10.998 inches
Population mean (μ) = 11 inches
Standard deviation (σ) = 0.02 inches
Sample size (n) = 100
Confidence level = 95%
2. Calculate the standard error:
Standard error (SE) = σ / √n = 0.02 / √100 = 0.02 / 10 = 0.002
3. Determine the critical value (z-score) for a 95% confidence level:
Using a z-table or calculator, find the z-score corresponding to a 95% confidence level. In this case, the z-score is 1.96.
4. Calculate the margin of error:
Margin of error (ME) = z-score * SE = 1.96 * 0.002 = 0.00392
5. Construct the 95% confidence interval estimate:
Lower limit = X - ME = 10.998 - 0.00392 = 10.99408
Upper limit = X + ME = 10.998 + 0.00392 = 11.00192
The 95% confidence interval estimate for the population mean paper length is (10.99408, 11.00192) inches.

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The researcher is conducting a descriptive statistical analysis using a frequency distribution. In this analysis, the frequency refers to the number of times each response option (categories) on the Likert-type scale is selected by the participants.

The categories represent the different response options on the Likert scale, which typically range from strongly agree to strongly disagree or similar variations. By analyzing the frequency distribution of responses across these categories, the researcher can identify patterns, trends, and central tendencies in the data, which can be useful for understanding the overall attitudes or opinions of the participants regarding the topic being investigated. '

This type of analysis is often presented in the form of a table or bar chart, displaying the frequency of each response category, making it easy to interpret and visualize the results.

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The margin of error for the confidence interval with a 98% confidence level is 6.912. So, the correct answer is (f) 6.912. To find the margin of error of the confidence interval with a 98% confidence level for the scores of a standardized test, we'll follow these steps:

1. Identify the given values:
  - Population standard deviation (σ) = 12 points
  - Sample size (n) = 20 scores
  - Sample mean (x) = 99 points
  - Confidence level = 98%

2. Determine the appropriate z-score for a 98% confidence level. Since the remaining 2% is split evenly on both tails, we'll look for the z-value corresponding to 0.01 (1% in the tails). From the provided values, z0.01 = 2.576.

3. Calculate the standard error (SE) of the sample mean using the formula:
  SE = σ / √n = 12 / √20 ≈ 2.683

4. Calculate the margin of error (ME) using the formula:
  ME = z-score * SE = 2.576 * 2.683 ≈ 6.912

The margin of error for the confidence interval with a 98% confidence level is 6.912. So, the correct answer is (f) 6.912.

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The margin of error at a 98% confidence level is c) 5.259 points.

To determine the margin of error at a 98% confidence level, we need to calculate the critical value, which corresponds to the confidence level.

In this case, the critical value is 2.326, which can be found in the standard normal distribution table.

Therefore, the margin of error at a 98% confidence level is c) 5.259 points.

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The amount of money saved by Kaitlin is $6.

We have,

Cost of Game= $12

Amount Kaitlin saved= 1/2 of total money

So, She saved

= 12 x 1/2

= 12 x 1/2

= 6 x 1

= $6

Thus, Kaitlin saved $6.

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Answer:

• 32 inches by 40 inches

Step-by-step explanation:

4:1 means that 4 inches on the actual painting, is 1 inch on the scaled painting.

4:1

8 by 10 inches

8 x 4 = 32 inches

10 x 4 = 40 inches

Can I please have brainly so I can level up? :)

32 inches by 40 inches,

just answering to help the other dude the brainliest

Answer: independent = p, dependent = c

Step-by-step explanation: the number of copies Tristan makes, or c, depends (is DEPENDENT) on the number of people who plan to attend, which is INDEPENDENT on the amount of copies

the number of copies is a reaction (DEPENDS) on the amount of people, not the other way around.

To compute px(x), we sum the joint probabilities over all possible values of y:

px(x) = Σp(x,y) for all y

Substituting the given values for p(x,y):

px(x) = Σd/[(n(n+1))/2] for y=1 to x

px(x) = xd/[(n(n+1))/2]

To compute py(y), we sum the joint probabilities over all possible values of x:

py(y) = Σp(x,y) for all x

Substituting the given values for p(x,y):

py(y) = Σd/[(n(n+1))/2] for x=y to n

py(y) = (n-y+1)d/[(n(n+1))/2]

To determine whether x and y are independent, we compare the product of the marginal probabilities to the joint probability:

If px(x)*py(y) = p(x,y), then x and y are independent.

Substituting the computed values for px(x) and py(y):

px(x)*py(y) = [xd/[(n(n+1))/2]]*[(n-y+1)d/[(n(n+1))/2]]

px(x)*py(y) = (xd/n)*(n-y+1)/n

px(x)*py(y) = xd(n-y+1)/n^2

Comparing to the given value for p(x,y):

p(x,y) = d/[(n(n+1))/2]

We see that px(x)*py(y) is not equal to p(x,y) in general. Therefore, x and y are not independent.

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If your data set is left-skewed, then your mean will be less than your median.

In a left-skewed distribution, the tail of the distribution is longer on the left-hand side, which means that there are some extreme low values that pull the mean towards the left. On the other hand, the median is not affected as much by extreme values, since it only depends on the middle value(s) of the data set. Therefore, in a left-skewed distribution, the median is usually greater than the mean.

Based on the provided informations and given values, the value of k for the given function and domain is calculated to be 11.

To find the value of k for the function G(x) = |5x - 4|, we need to evaluate the function at the endpoints of the given domain and find the maximum value.

The domain of the function is 0 ≤ x ≤ 3, so we need to evaluate the function at x = 0 and x = 3.

When x = 0:

G(0) = |5(0) - 4| = 4

When x = 3:

G(3) = |5(3) - 4| = 11

So, the maximum value of the function occurs at x = 3, and the value is 11.

Since the function is continuous over the given domain, we know that the maximum value occurs either at one of the endpoints or at a critical point in between.

The critical point is where the expression inside the absolute value bars, 5x - 4, equals zero:

5x - 4 = 0

x = 4/5

However, 4/5 is not in the given domain, so the maximum value occurs at x = 3, and the value is 11.

We know that the maximum value of the function is k, so:

k = G(3) = 11

Therefore, the value of k for the given function and domain is 11.

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Answer:

The answer is 59 units

Step-by-step explanation:

area of sector =0/360×pir²

A=56/360×22/7×11²

A=149072/2520

A=59units

For a sum of $20709, prize is of either $100 or $25, there will be 15 prizes of $100 and 48 prizes of $25.

Let's assume that x prizes are given for $100 and y prizes are given for $25. Then, we can set up a system of two equations based on the given information,

x + y = 63 (the total number of prizes is 63)

100x + 25y = 2709 (the total value of the prizes is $2709)

We can solve this system of equations by substitution or elimination. Here, we will use the elimination method, multiplying the first equation by 25, we get,

25x + 25y = 1575

75x = 1134

Dividing both sides by 75, we get,

x = 15.12

Since we cannot have a fractional number of prizes, we can round this down to 15 (because it is closer to 15 than to 16).

Substituting x = 15 in the first equation, we get,

15 + y = 63

Solving for y, we get,

y = 48

Therefore, 15 prizes are given for $100 and 48 prizes are given for $25.

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To copy segment AB, D, The distance between points A and B needs to be identified for the construction.

A segment is a section of a line that is bounded by two unique ends and contains every point on the line between them. A segment is designated after its endpoints, therefore segment AB refers to the section of the line connecting points A and B.

To copy segment AB can be accomplished by utilizing a measuring instrument such as a ruler or tape measure to determine the distance between the two spots. Once the distance is determined, a new point that is the same distance away from point A as point B can be produced.

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The theoretical probability and experimental probability of pulling a gold marble from the bag are 25% and 27.5% respectively.

Given that,

There are 10 brown, 10 black, 10 green, and 10 gold marbles in bag.

Total number of marbles = 40 marbles

A student pulled a marble, recorded the color, and placed the marble back in the bag.

Number of gold marbles in the bag = 10

Theoretical probability = Number of gold marbles / total number of marbles

                                      = 10/40

                                      = 1/4 = 25%

Frequency of gold marbles = 11

Experimental probability = 11/40 = 27.5%

Hence the theoretical and experimental probability are 25% and 27.5% respectively.

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To solve this problem, we need to use Green's Theorem, which relates the line integral of a vector field around a closed curve to the double integral of the curl of the same vector field over the region enclosed by the curve. Specifically, Green's Theorem states that:

∫C F. dr = ∬R curl(F) dA

where C is a closed curve that encloses the region R, F is a vector field, dr is a small displacement vector along the curve, and dA is a small area element in the plane.

Now, let's apply Green's Theorem to each of the integrals:

1. ∫C1 F. dr

Since C1 is not a closed curve, we cannot use Green's Theorem directly. However, we can use the fact that F is a conservative vector field to simplify the integral. Recall that if F is conservative, then there exists a scalar potential function φ such that F = ∇φ, where ∇ is the gradient operator. In this case, we know that F. dr = 5 along C3 from C2, so we can write:

∫C3 F. dr - ∫C2 F. dr = 5

But since F is conservative, we can apply the Fundamental Theorem of Calculus for Line Integrals to obtain:

∫C3 F. dr - ∫C2 F. dr = φ(P3) - φ(P2)

where P3 and P2 are the endpoints of C3 and C2, respectively. Therefore, we have:

∫C1 F. dr = ∫C3 F. dr - ∫C2 F. dr = φ(P3) - φ(P2) + 5

Note that the value of the integral depends only on the endpoints of C3 and C2, and not on the path taken between them.

2. ∫C2 F. dr

Since C2 is a closed curve, we can apply Green's Theorem directly. Let R be the region enclosed by C2, then we have:

∫C2 F. dr = ∬R curl(F) dA

Since F is conservative, we know that curl(F) = 0, so the double integral vanishes and we have:

∫C2 F. dr = 0

In other words, the line integral around a closed curve of a conservative vector field is always zero.

3. ∫C3 F. dr

We can apply Green's Theorem to C3 just like we did for C2. Let R be the region enclosed by C3, then we have:

∫C3 F. dr = ∬R curl(F) dA

Since curl(F) = 0, we again obtain:

∫C3 F. dr = 0

In summary, the values of the integrals are:

1. ∫C1 F. dr = φ(P3) - φ(P2) + 5

2. ∫C2 F. dr = 0

3. ∫C3 F. dr = 0

Note that the first integral depends on the potential function φ, which we do not have information about. Therefore, we cannot determine its value without more information about F.

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