Friday

November 21, 2014

November 21, 2014

Posted by **Anonymous** on Friday, April 26, 2013 at 3:25pm.

a. Verify that the conditions for computing a confidence interval are met in this case.

b. Compute and interpret a 95% confidence interval for the mean number of hours the students at this school sleep each night.

- AP Statistics -
**gbaby**, Tuesday, May 14, 2013 at 11:43amA school psychologist reports that the mean number of hours the students at this school sleep each night is 8 hours. The students believe the mean is not 8 hours. To find an estimate of the true mean, they select a random sample of 15 students from their school and ask how many hours each slept last night. A stemplot and boxplot of the numbers of hours are shown here. T he sample mean is 6.67 hours with a sample standard deviation of 1.88 hours.

a. Verify that the conditions for computing a confidence interval are met in this case.

b. Compute and interpret a 95% confidence interval for the mean number of hours the students at this school sleep each night.

**Answer this Question**

**Related Questions**

statistics - Question 1 A school psychologist reports that the mean number of ...

statistics - The number of hours that college students sleep on a week night is...

statistics - A sample of 70 night-school students' ages is obtained in order to ...

statistics - College students average 7.8 hours of sleep per night with a ...

statistics - The typical amount of sleep per night for undergraduate college ...

statistics - researchers believe a new sleep on average 10 hours per night...

Probability/Statistics - Using diaries for many weeks, a study on the lifestyles...

Statistics - A study is being planned to estimate the mean number of semester ...

math - which of the following correlation demonstrate a casual relationship? 1 ...

math - which of the following correlation demonstrate a casual relationship? 1 ...