Sleep researchers theorize that 25% of the general population suffers from obstructive sleep apnea. Researchers found that 124 of 159 emergency room nurses suffered from obstructive sleep apnea.
-The appropriate test statistic to test the hypotheses is _____.
A)-16.13
B)-15.43
C)13.63
D)15.43
E)16.13

Question

Quizplus · Accepted Answer

It is not stated which test statistic is being used, but we can assume it is a t-test. In this case, the test statistic would have a positive value (since the sample mean is greater than the hypothesized population mean), and the absolute value of this t-statistic is 15.43. Therefore, the best choice is D.

Sleep Researchers Theorize That 25% of the General Population Suffers