Multiple Choice
A professor would like to test the hypothesis that the average number of minutes that a student needs to complete a statistics exam has a standard deviation that is less than 5.0 minutes. A random sample of 15 students was selected and the sample standard deviation for the time needed to complete the exam was found to be 4.0 minutes. The degrees of freedom for this hypothesis test would be ______.
A) 16
B) 15
C) 14
D) 13
Correct Answer:
Verified
Correct Answer:
Verified
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