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 rejection point to test the hypotheses at α = .001 is _____.
A)1.645
B)1.960
C)2.575
D)3.090
E)3.291

Question

Quizplus · Accepted Answer

The rejection point to test the hypotheses at α = .001 is 3.291. This is the value obtained from a standard normal distribution table or calculator at the .9995 probability level, which is (1 - α). This means that if the calculated test statistic falls outside the range of ±3.291, we can reject the null hypothesis at the .001 significance level.

Sleep Researchers Theorize That 25% of the General Population Suffers