Answer:
The t-score has the same interpretation as the z-score. It measures how far in standard deviation units \stackrel{-}{x} is from its mean μ. For each sample size n, there is a different Student’s t-distribution. The degrees of freedom, n – 1, come from the calculation of the sample standard deviation s. Remember when we first calculated a sample standard deviation we divided the sum of the squared deviations by n − 1, but we used n deviations \left(x-\stackrel{-}{x}\text{values}\right) to calculate s. Because the sum of the deviations is zero, we can find the last deviation once we know the other n – 1 deviations. The other n – 1 deviations can change or vary freely. We call the number n – 1 the degrees of freedom (df) in recognition that one is lost in the calculations. The effect of losing a degree of freedom is that the t-value increases and the confidence interval increases in width.
Properties of the Student’s t- Distribution 0.05, 95% level of confidence, we find the t-value of 1.96 at infinite degrees of freedom.
Step-by-step explanation:
I NEED HELP ASAP PLEASE????!!!!!!!
what is the measure of angle c ?
Answer:
Step-by-step explanation:
C and F are supplementary angles.
C = 180°-79° = 101°
If CDE congruent to GHF, solve for x
Answer: B- 17
Step-by-step explanation: I did this with my class and 17/B was the correct answer.
Can someone help me with this problem I need to answer it to move on :(
besties if your looking for 50+ points and brainliest plz answer this correctly thanks
help plzzzzzz!!!!!!!
Dividing (8-x³) by (2-x), the quotient is _
Step-by-step explanation:
........hopr it helpsssssss
Find each angle and arc measure
Answer:
mpsr
Step-by-step explanation:
Find the value of x and the measure of each angle:
Answer:
m<M= 85° m<N= 85°
Step-by-step explanation:
To find the value of x we should...
Sum of all angles = 360°
95+95+10x-5+8x+13 = 360
198+18x = 360
18x = 360-198
18x = 162
x = 162÷18
x = 9
m<M = (10×9)-5 = 90-5 = 85°
m<N = (8×9)+13 = 72+13 = 85°
PLZZZ MARK ME AS BRAINLIEST PLZZZ
Answer:
x = 9
∠M = 85°
∠N = 85°
Step-by-step explanation:
360 = 95 + 95 + (10x-5) + (8x + 13)
reduce:
18x = 162
x = 9
∠M = 85°
∠N = 85°
Subtract the fractions. Write each difference in simplest form.
8/9 - 5/6 =
Answer:
1/18
Step-by-step explanation:
Change the denominators to 18 to make like denonminators (make sure to multiply the top)
(16/18 - 15/18)
1/18
Answer:
1/18
Step-by-step explanation: 8x6=48 5x9=45 48-45= 3 9x6=54 3/54= 1/18
SQUARE ROOTS PLS ASAP DUE VERY SOON NO LINKS PLEASE............
Answer:
14. 5
15. 12
16. 9
17. 13
18. 14
19. 20
20. 19
21. 15
22. 600
23. -1
24. 4
25. -18
26. 25
hope this helped
Fourteen percent of the town’s population are above the age of 65. If there are about
320 residents over the age of 65, then what is the town’s population?
Answer: 2285
Step-by-step explanation:
320 ÷ 14% = 2285
In the continental United States, the ratio of states that border an ocean to states that do not border an ocean is 7:9. How many of the states border an
ocean?
Worth 25 points
Answer:
23
Step-by-step explanation:
6x = 2y - 7 what is the terms
Answer:
y = 3x+7/2, and x = (2y-7)/6
Step-by-step explanation:
Write the equation of the line in either point-slope form or slope-intercept form.
Write the equation of a line that has a slope of -3 and passes through the point (1.25, -4).
Use the drop-down menus to select the appropriate values in the equation.
y = _ x + _
Answer:
here you go hope this helps
Step-by-step explanation:
y= -3x + -4
Answer:
answer in picture
Step-by-step explanation:
How can I find what the question is looking for?
Answer:
m<N = 130°
m<K = 50°
x = 28
Step-by-step explanation:
angle N and angle K are supplementary so the sum of their measures is 180°
4x + 18 + 2x - 6 = 180 add like terms
6x + 12 = 180 subtract 12 from both sides
6x = 168 divide both sides by 6
x = 28 to calculate the measurements of angle N and K replace x with 28
N = 4x + 28 so 4 × 28 + 18 = 130°
N = 2x - 6 and 2×28 - 6 = 50°
Alex is building a square sandbox with sides 2 feet long and 3 feet deep he wants to fill it 2/3 full how much sand should he order
Answer:
8 cubic feet
Step-by-step explanation:
First find the volume of the sand box
2 x 2 x 3 = 12
then multiply the total volume by 2/3
12 x 2/3 = 8
That leaves you with the total cubic feet of sand he would need.
Solve the following equations for x
13−(2x+2)=2(x+2)+3x
Answer:
x = 1
Step-by-step explanation:
Answer:
[tex]x = 1[/tex]
step By Step Explanations:
1) Remove parentheses.
[tex]13 - 2x - 2 = 2(x + 2) + 3x[/tex]
2) Simplify 13 - 2x - 2 to -2x + 11.
[tex] - 2x + 11 = 2(x + 2) + 3x[/tex]
3) Expand.
[tex] - 2x + 11 = 2x + 4 + 3x[/tex]
4) Simplify 2x + 4 + 3x to 5x + 4.
[tex] - 2x + 11 = 5x + 4[/tex]
5) Add 2x to both sides.
[tex]11 = 5x + 4 + 2x[/tex]
6) Simplify 5x + 4 + 2x to 7x + 4.
[tex]11 = 7x + 4[/tex]
7) Subtract 4 from both sides.
[tex]11 - 4 = 7x[/tex]
8) Simplify 11 - 4 to 7.
[tex]7 = 7x[/tex]
9) Divide both sides by 7.
[tex]1 = x[/tex]
10) Switch sides.
[tex]x = 1[/tex]
Therefor, the answer is x = 1.
the initial population of a town is 3200 grows with a doubling time of 10 yrs what will the population be in 12yrs
Answer:
I think 6464
Step-by-step explanation:
I wish you luck on this assignment:P:D
45% of 81.21 is a number between?
Answer:
4 and 40
Step-by-step explanation:
the answer is 36
45/100 multiplied by 81.21
I got this wrong and want to see what the correct answer is please.
Write an exponential function to model the following situation: A population starting at 740 animals
decreases at an annual rate of 12%. Use your function to determine about how many animals there will
be after 5 years.
A. 390
B. 150
CC. 680
D. 340
Answer:
A. 390
Step-by-step explanation:
An exponential function can be written in the form [tex]f(n)=a\times b^n[/tex], where [tex]a[/tex] is your starting population, [tex]b[/tex] is the factor by which the population increases, and [tex]n[/tex] is the number of terms. In this case, [tex]a=740[/tex], [tex]b=0.88[/tex] because the population decreases by 12 percent (1-0.12=0.88), and [tex]n=5[/tex].
Thus, [tex]f(5)=740 \times 0.88^5[/tex], which is roughly equal to 390.
Plz help it’s due in 5 min...
Which table represents a direct proportion between the number of tickets sold and the total cost?
Answer:
The answer is D
Step-by-step explanation:
y=kx
9=k
Plug it in they are all true.
The table represents a direct proportion between the number of tickets sold and the total cost will be D.
What is a linear equation?A connection between a number of variables results in a linear model when a graph is displayed. The variable will have a degree of one.
The slope of the line is given as,
m = (y₂ - y₁) / (x₂ - x₁)
For the linear relationship, the slope will remain constant.
Let's check all the options, then we have
A. The slope is given as,
m = (2 - 0) / (1 - 0) = (4 - 2) / (3 - 1)
m = 2 ≠ 1
B. The slope is given as,
m = (4 - 0) / (2 - 0) = (6 - 4) / (4 - 2)
m = 2 ≠ 1
C. The slope is given as,
m = (7 - 5) / (2 - 1) = (9 - 7) / (3 - 2) = (11 - 9) / (4 - 3)
m = 2 = 2 = 2
The y-intercept is 3.
D. The slope is given as,
m = (18 - 9) / (2 - 1) = (27 - 18) / (3 - 2) = (36 - 27) / (4 - 3)
m = 9 = 9 = 9
The y-intercept is zero.
The table addresses an immediate extent between the number of tickets sold and the all-out cost will be D.
More about the linear equation link is given below.
https://brainly.com/question/11897796
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Points D and E are midpoints of the sides of triangle
ABC. The perimeter of the triangle is 48 units.
What is the value of t?
2
3
6
8
*ANSWER IS 2 just took the test*
Answer:
A. 2
Step-by-step explanation:
From the diagram, it is indicated;
AD = DB = 3t,
AC = 7t + 6
CE = EB = 4t
Perimeter = 48 units
Perimeter = AD + DB + AC + CE + EB
Plug in the values
48 = 3t + 3t + 7t + 6 + 4t + 4t
Add like terms
48 = 21x + 6
48 - 6 = 21x + 6 - 6
42 = 21x
42/21 = 21x/21
2 = x
x = 2
A company has 12,247 customers they extend credit to, how many total A/R will they have (just type the number, no commas)
Answer:
12247
Step-by-step explanation:
Accounts receivables A/R are the amounts that will be collected from customers to whom goods are sold on credit.
Now, since there are 12,247 customers to whom the credit has been extended to, there will be equal number of 12,247 accounts receivable in their books and a single GL (General ledger) will be there representing and showing the total amount due from these 12,247 customers.
that is, the company will have to make 12,247 accounts receivable accounts, each having the names of the respective customers.
Simplify the following expression: 3(2x+7) *
O 6x + 7
O 6x + 10
O 6x + 21
O 5x + 10
3 x 2x = 6x
3 x 7 = 21
6x+21
A community center offers yoga classes for $8 per month plus an additional $0.25 per center floor mat used.
Write an equation to express this relationship, using m to represent the number of mats used per month and C to represent the total cost in dollars.
Identify all the real solutions of the graph below
A data set has these values: 10, 12, 12, 14, 14, 14, 14, 16, 16, 18. The
histogram of the distribution is shown.
Which statement does not describe the data set?
A. It has a median of 14
B. It is symmetric
C. It has a range of 19.
D. It has a mode of 14
The correct statement which does not describe the data set is,
⇒ It has a range of 19.
What is Addition?The process of combining two or more numbers is called the Addition. The 4 main properties of addition are commutative, associative, distributive, and additive identity.
Given that;
A data set has these values:
⇒ 10, 12, 12, 14, 14, 14, 14, 16, 16, 18
Hence, We get;
Range = 18 - 10 = 9
Median = 10/2 + 1 term
= 5 + 1 term
= 6th term
= 14
Thus, The correct statement which does not describe the data set is,
⇒ It has a range of 19.
Learn more about the addition visit:
https://brainly.com/question/25421984
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Tiffany surveyed some of her classmates to find the number of times they wrote the weekly spelling words. She also found the number of words they missed on the spelling test. The scatterplot shows the results of Tiffany’s survey. Which statement does NOT match Tiffany’s scatterplot?
Options :
A.) A student who missed 2 words on the test wrote each word 4 times.
B.) A student who wrote each word once missed 6 words on the test.
C.) A student who did not write the words missed 8 words on the test.
D.) A student who missed 4 words on the test wrote each word 3 times.
Answer:
A student who did not write the words missed 8 words on the test.
Step-by-step explanation:
From the scatter plot, we could identify all the other points except that of option C.
For option A : (4, 2) is a marked point on the graph
For option B : (1, 6) is also a marked point on the graph
For option C : (0, 8) is not a marked point on the graph and hence, does not match Tiffany's scatter plot.