A professor would like to test the hypothesis that the average number of minutes that a student needs to complete a statistics exam is equal to 45 minutes. A Type I error would occur if the professor concludes that the average exam time is _______.
A)not equal to 45 minutes when, in reality, the average time is equal to 45 minutes
B)not equal to 45 minutes when, in reality, the average time is greater than 45 minutes
C)equal to 45 minutes when, in reality, the average time is not equal to 45 minutes
D)equal to 45 minutes when, in reality, the average time is less than 45 minutes

Question

Quizplus · Accepted Answer

A Type I error occurs when the null hypothesis is rejected when it is actually true. In this scenario, the null hypothesis is that the average exam time is equal to 45 minutes. Rejecting this hypothesis when it is true (concluding the average time is not equal to 45 minutes when it actually is) constitutes a Type I error.

A Professor Would Like to Test the Hypothesis That the Average