Using the t-distribution, we have that the 95% confidence interval for the true mean number of pushups that can be done is (9, 21).
For this problem, we have the <u>standard deviation for the sample</u>, thus, the t-distribution is used.
- The sample mean is of 15, thus
. - The sample standard deviation is of 9, thus
. - The sample size is of 10, thus
.
First, we find the number of degrees of freedom, which is the one less than the sample size, thus df = 9.
Then, looking at the t-table or using a calculator, we find the critical value for a 95% confidence interval, with 9 df, thus t = 2.2622.
The margin of error is of:
Then:
The confidence interval is:
Then
The confidence interval is (9, 21).
A similar problem is given at brainly.com/question/25157574
Answer:
Amount John gets paid per hour 
Dollars per hour ,
Step-by-step explanation:
To find how much he gets paid per hour we need to divide the total payment he received by the total number of hours he worked.
Amount John gets paid per hour = 
Dollars per hour.
= Dollars per hour
Answer:
1 = Given
2 = Addition Property of Equality
3 = Division Property of Equality
Step-by-step explanation:
<u>1 = Given</u>
[] The problem gives us this equation
<u>2 = Addition Property of Equality</u>
[] We add 2x to both sides, which is the addition property of equality
<u>3 = Division Property of Equality</u>
[] We divide both sides of the equation by 6, which is the division property of equality
Have a nice day!
I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly. (ノ^∇^)
- Heather
Answer:
65 miles per hour.
Step-by-step explanation:
You can divide 325 by 5 to get how many miles she drove per hour :)
