Answer:
Options C. and D. are correct.
Step-by-step explanation:
Let 
Equation of a line is given by 

Put 

Put 

Put 

Put 

Put 

So, points
satisfy the equation 
Therefore,
points
lie on the line through
and 
Options C. and D. are correct.
Answer:
The margin of error for her confdence interval is of 0.3757.
Step-by-step explanation:
We have the standard deviation for the sample, which means that the t-distribution is used to solve this question.
The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So
df = 18 - 1 = 17
99% confidence interval
Now, we have to find a value of T, which is found looking at the t table, with 17 degrees of freedom(y-axis) and a confidence level of
. So we have T = 2.8982
The margin of error is:

In which s is the standard deviation of the sample and n is the size of the sample.
Standard deviation of 0.55 meters.
This means that 
What is the margin of error for her 99% confidence interval?



The margin of error for her confdence interval is of 0.3757.
Answer:
There are 60 questions on the test
Step-by-step explanation:
Hope this helps :)
Answer:
x = 5/2, -3
or
x = 2.5, -3
or
2 1/2, -3
Step-by-step explanation:
Brainliest Please!!
- Hermionia
Given:
Diameter of outer circle = 20 inches.
We need to find the Area of the outer circle to get the radius of the inner circle.
Area = πr²
Outer circle Area = 3.14 * (10in)² = 314 in²
314 in² * 64% probability = 200.96 in² Area of the inner circle.
200.96 in² = 3.14 * r²
200.96 in² / 3.14 = r²
64 in² = r²
√64 in² = √r²
8 in = r
radius of inner circle is 8 inches.