A research question asks, "Is the mean number of hours spent studying per week for college freshmen lower than 15?" Which one of the following is implied?

Question

Quizplus · Accepted Answer

The question implies a left-tailed test because it is asking if the mean number of hours is lower than a specific value (15 hours), which suggests interest in values to the left of 15 on a distribution curve.

A Research Question Asks, "Is the Mean Number of Hours