A simple random sample of 30 students was selected from a normally distributed population of high

school students. The following confidence intervals were calculated at 90, 95, and 99% confidence levels

to estimate the average number of hours of sleep the students got each night. Determine which

confidence level goes with each confidence interval.

Between 7.3 and 8.7 hours of sleep:

Between 7.0 and 9.0 hours of sleep:

Between 7.2 and 8.8 hours of sleep:

Question

Mathematics

Corinne Ross

19 February, 23:37

A simple random sample of 30 students was selected from a normally distributed population of high

school students. The following confidence intervals were calculated at 90, 95, and 99% confidence levels

to estimate the average number of hours of sleep the students got each night. Determine which

confidence level goes with each confidence interval.

Between 7.3 and 8.7 hours of sleep:

Between 7.0 and 9.0 hours of sleep:

Between 7.2 and 8.8 hours of sleep:

+4

Answers (2)

Know the Answer?

Noel Cline · Answer 1

Between 7.3 and 8.7 hours of sleep: 90% confindence level

Between 7.0 and 9.0 hours of sleep: 99% confindence level

Between 7.2 and 8.8 hours of sleep: 95% confindence level

Second Part: between 7.0 and 9.0 hours of sleep

Blaze · Answer 2

90% confidence

99% confidence

95%confidence

Step-by-step explanation:

Then next is between 7.0 and 9.0 hours of sleep