A psychologist wants to estimate the average number of hours college students sleep per night. If the standard deviation is known to be s=1.8 s = 1.8 hours, how many students should be surveyed to estimate the mean within 0.50.5 hours with 99%99\% confidence?

A psychologist wants to estimate the average number of hours coll...

Determining the Minimum Sample Size Required: Videos & Practice Problems

A psychologist wants to estimate the average number of hours college students sleep per night. If the standard deviation is known to be s=1.8 s = 1.8 hours, how many students should be surveyed to estimate the mean within 0.50.5 hours with 99%99\% confidence?

A psychologist wants to estimate the average number of hours college students sleep per night. If the standard deviation is known to be $s equals 1.8$ hours, how many students should be surveyed to estimate the mean within $0.5$ hours with $99 percent sign$ confidence?