A professor would like to test the hypothesis that

Question 3 0 / 1 point
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. Using α = 0.05, the critical value for this hypothesis test would be ________.
Question 4 1 / 1 point
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. Using α = 0.05, the conclusion for this hypothesis test would be that because the
test statistic is
more than the critical value, we fail to reject the null hypothesis and cannot conclude that the
standard deviation for the time to complete an exam is less than 5.0 minutes.