The administrator at a local hospital states that on weekends the average wait t

Question

The administrator at a local hospital states that on weekends the average wait time for emergency room visits is 10 minutes with an unknown population standard deviation. Based on discussions you have had with friends who have complained on how long they waited to be seen in the ER over a weekend, you dispute the administrator's claim. You decide to test your hypothesis. Let m be the average wait time for patients at the emergency room. Your null and alternative hypotheses are:

Over the course of a few weekends you record the wait time for 40 randomly selected patients. If you have set the significance level to 0.05, what is the rejection region for your test of these hypotheses?

Explanation / Answer

For unknown population standard deviation, use t test.

df = n-1 = 40 - 1 = 39

From the alternative hypothesis, this is right tailed test.

Critical value at 0.05 level and for 39 df is 1.685

Critical region - Reject H0 if test statistics value > 1.685

Related Questions

Navigate

• Browse (All)
• Browse T
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.