A researcher compares the height of male executives in the United States to the average height of males ($\mu$ = 67 in.).He determines that the average height of male executives is 70 in.(95% confidence interval [CI] 68-72).Based on this result,what would the decision have been for a hypothesis test?
A) reject the null hypothesis
B) retain the null hypothesis
C) there is not enough information to answer this question

Question

Quizplus · Accepted Answer

The 95% confidence interval does not include the average height of the general male population (67 in.), which indicates that the difference between the two groups is statistically significant. Therefore, the null hypothesis of "there is no difference in height between male executives and the average male population" would be rejected in favor of the alternative hypothesis of "male executives are taller than the average male population."

A Researcher Compares the Height of Male Executives in the United