You read about a study testing whether night shift workers sleep the recommended 8 hours per day.Assuming that the population variance of sleep (per day)is unknown,what type of t test is appropriate for this study?
A)one-sample t test
B)two-independent sample t test
C)There is not enough information to answer this question.

Question

Quizplus · Accepted Answer

A one-sample t test is used when we want to compare a sample mean to a known or hypothesized population mean, and the population variance is unknown. In this case, the study is examining whether night shift workers sleep the recommended 8 hours per day, which serves as the known or hypothesized population mean. Therefore, a one-sample t test is appropriate.

You Read About a Study Testing Whether Night Shift Workers