Author Question: In a test of H0: = 70 against Ha: 70, the sample data yielded the test statistic z = 2.11. Find ... (Read 110 times)

a0266361136 · **on:** Jul 24, 2018

In a test of H0: = 70 against Ha: 70, the sample data yielded the test statistic z = 2.11. Find and interpret the p-value for the test.

What will be an ideal response?

Question 2

According to a published study, 1 in every 6 men has been involved in a minor traffic accident. Suppose we have randomly and independently sampled twenty-five men and asked each whether he has been involved in a minor traffic accident.

How many of the 25 men do we expect to have never been involved in a minor traffic accident? Round to the nearest whole number.
A) 25 B) 4 C) 6 D) 21

dpost18 · **Reply #1 on:** Jul 24, 2018

Answer to Question 1

p-value = P(z < -2.11 or z > 2.11 ) = 2(.5 - .4826 ) = .0348; The probability of a test statistic even more contradictory to the null hypothesis than the one observed is .0348.

Answer to Question 2

D