Can you help me pls?

Answer:

By the Central Limit Theorem, the sampling distribution is approximately normal, with mean 8989 and standard deviation 52.92.

Step-by-step explanation:

Central Limit Theorem

The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean [tex]\mu[/tex] and standard deviation [tex]s = \frac{\sigma}{\sqrt{n}}[/tex].

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

Mean number of steps per day is 8989 with a standard deviation of 688.

This means that [tex]\mu = 8989, \sigma = 688[/tex]

Describe completely the sampling distribution of the resulting mean number of steps per day for this sample of 169 VCU students who track their steps each day.

Sample of 169 means that [tex]n = 169[/tex]

By the Central Limit Theorem, the sampling distribution is approximately normal, with mean [tex]\mu = 8989[/tex] and standard deviation [tex]s = \frac{688}{\sqrt{169}} = 52.92[/tex].

Answer:

D I think most likely

Step-by-step explanation:

9 would be your answer to your left side and its close to 10 so 9 would work I guess.

Answer:

20

Step-by-step explanation:

1400/70 = 20

Answer: 20

Answer:

about 20 humans

Step-by-step explanation:

If a human weighs 70 kilograms, it takes about 20 to weight the same as the swordfish

Answer:

9

Step-by-step explanation:

She will need to fill the measuring spoon 3 times for each pot since 1/8 *3 is 3/8. Multiply the 3 by 3 since there are three pots to get 9 .

9514 1404 393

Answer:

  4. "corresponding angles"

Step-by-step explanation:

We presume you're looking for an error in the proof.

The error is in Reason 4. The reason shown refers to "alternate interior" angles, but names "corresponding" angles.

The proof will be correct if the wording "alternate interior" is replaced by "corresponding" in Reason 4.

Answer:

x = 125

Step-by-step explanation:

x = 160 - 35

x = 125

Answer:

look at my explanation..

Step-by-step explanation:

a. 1 and 3

b. 2 and 7

c. 2 and 8

Answer:

C. Alternate Interior angles.

Step-by-step explanation:

Alternate interior angles are inside parallel lines, and on opposite sides of the transversal line that crosses the parallel lines.

It's not A, because corresponding angles are in the same position on parallel lines. Angles 2 & 6 are corresponding angles. It's not B, because the two are not next to each other, forming a straight line. 6&7 are straight angles, and 5&6 are straight angles.

Answer:

8/19

Step-by-step explanation:

The probability that a student is chosen randomly from the class passed the test and completed the homework will be 0.1637.

Probability means possibility. It deals with the occurrence of a random event. The value of probability can only be from 0 to 1. Its basic meaning is something is likely to happen. It is the ratio of the favorable event to the total number of events.

In a math class with 19 students, a test was given the same day that an assignment was due.

There were 10 students who passed the test and 11 students who completed the assignment.

There were 6 students who failed the test and also did not complete the assignment.

Then the probability that a student is chosen randomly from the class passed the test and completed the homework will be

The number of the student who has done at least one assignment or passed the test is 19 - 6 = 13

n(A) = passes student

n(B) = given assignment

Then we have

[tex]\rm n(A \cap B) = n(A) + n(B) - n(A \cup B) \\\\n(A \cap B) = 10 + 11 - 13\\\\n(A \cap B) = 8[/tex]

Then the probability will be

[tex]\rm P = \dfrac{^8C_2}{^{19}C_2}\\\\P = \dfrac{28}{171}\\\\P = 0.1637[/tex]

More about the probability link is given below.

https://brainly.com/question/795909

#SPJ2

the answer would be B ( 4,-5) because when I put them on a graph it came up with the right one

Answer:

H0 : μ = 8.5

H1 : μ > 8.5

1 sample t test ;

Test statistic = 2.53

Pvalue = 0.994

No, we fail to reject the Null ;

There is no significant evidence to support the Claim that the mean running time of light bulb is greater Tha last year.

Step-by-step explanation:

H0 : μ = 8.5

H1 : μ > 8.5

Test statistic :

(xbar - μ) ÷ (s/sqrt(n))

(8.7 - 8.5) ÷ (0.5 / sqrt40)

Test statistic = 2.53

The Pvalue :

P(Z < 2.53) = 0.9943

Pvalue = 0.994

Decison region :

Reject H0 ; if Pvalue < α

0.9943 > 0.05 ; We fail to reject the Null

Answer:

B

Step-by-step explanation:

C and D are eliminated since those make it bigger and there are 5 zeros so the answer is B.

Answer:

A. Event A is not dependent on Event B.

Step-by-step explanation:

You have two events A and B such that P(A| B) = 0.4 and P(A) = 0.4.

This means that the probability of event A happening, given that B happened is 0.4, which is also the same probability of event A happening.

Since these probabilities are equal, event A is independent from option B, and the correct answer is given by option A.

Answer:

Option A for plato users

Step-by-step explanation:

A. Event A is not dependent on Event B.

Answer:

115

Step-by-step explanation:

When two parallel lines are intersected by a third line, the angles on both parallel lines are congruent.

Knowing this we can determine that angle 1 is 65 degrees.

Additionally, we know that angle 1 + angle 2 = 180 degrees.

From there we can substitute the measures to determine that 65 + x = 180 and x = 115

Answer:

perimeter =sum of all side=29+8+16+22+8+22+29-16=118cm

Answer:

b. - 3x+2

Step-by-step explanation:

x?+6x^2+12x-136

I think this is the answer

Answer:

6x2−11x−136

Step-by-step explanation:

Let's simplify step-by-step.

6x2−12x+48−(−x+247−63)

Distribute the Negative Sign:

=6x2−12x+48+−1(−x+247−63)

=6x2+−12x+48+−1(−x)+(−1)(247)+(−1)(−63)

=6x2+−12x+48+x+−247+63

Combine Like Terms:

=6x2+−12x+48+x+−247+63

=(6x2)+(−12x+x)+(48+−247+63)

=6x2+−11x+−136

Complete Question

An F5 tornado is classified as having mean wind speeds greater than 261 mph. In an effort to classify a recent tornado, 20 wind speed measurements were randomly selected from within the path of the tornado. Suppose the mean wind speed for this tornado really is greater than 261 mph with a sample standard Deviation 41.09 mph. Based on the data, if we fined little to no evidence against the null hypothesis that the mean wind speed is 261 mph, we have made _______________.

Answer:

[tex]P-value=0.3322[/tex]

Step-by-step explanation:

From the question we are told that:

Sample size [tex]n=20[/tex]

Population mean [tex]N=261[/tex]  

Sample mean [tex]\=x= 265.1[/tex]  

Sample standard deviation [tex]\sigma=41.09[/tex]    

Generally the equation t test statistics is mathematically given by

[tex]t=\frac{\=x-\mu}{\frac{s}{\sqrt{n} } }[/tex]

[tex]t=\frac{265.1-261}{\frac{41.09}{\sqrt{20} } }[/tex]

[tex]t=0.446[/tex]

Therefore

Pvalue from table is

[tex]P-value=0.3322[/tex]

Answer:

I wanna say 18 but I'm not to sure

Answer:

Very simple. 0.03125

Step-by-step explanation: 0.5x0.5x0.5x0.5x0.5=0.03125

Answer:

18 days

Step-by-step explanation:

72/6=12 miles per day

12*3=36

648/36=18 days

Answer:

B. A pencil

Hope it works

Answer:

The Answer is A. $107.25

Step-by-step explanation:

Answer/Step-by-step explanation:

Given:

-x + 3x + 1 + 4(x + 2) = 54

To solve, first open the bracket by applying the distributive property. Multiply every term you have in the bracket by 4

-x + 3x + 1 + 4x + 8 = 54

Add like terms together

6x + 9 = 54

Subtract 9 from each side

6x = 54 - 9

6x = 45

Divide both sides by 6

x = 45/6

x = 7.5

Answer:

Steps 4 and 5

Step-by-step explanation:

Paula divided both sides in 4 and 5 to keep the equations equal.

Hope that this helps!

Answer:

the answer for 12 would be 63

Step-by-step explanation:

7 x 9 x 1

Answer:

♥♥♥

I tried solving this answer and got 25.2. So, I think you're answer will be 25.

Step-by-step explanation:

I divided 63 by 2.5. Hope I helped.

Answer:

640 i think

Step-by-step explanation:

Answer:

0.8 or 4/5

Step-by-step explanation: