Answer to Question #120626 in Statistics and Probability for Joseph Se

Question #120626

1. We would like to test the following hypotheses

H0 :p = 0.05
HA :p < 0.05

The sample size is 150 and the sample proportion is 8%, i.e. p hat = 0.08. Which of the below is the correct test for this situation?

A. z-test for a proportion
B. t-test for a mean
C. z-test for comparing two proportions
D. chi-square test of independence
E. randomization test for a proportion

Expert's answer

There is one sample proportion to be tested.

A. z-test for a proportion