Q 28

A sociologist develops a test to measure attitudes about public transportation,and 27 randomly selected subjects are given the test.Their mean score is 76.2 and their standard deviation is 21.4.Construct the 95% confidence interval for the mean score of all such subjects. A)(64.2,83.2) B)(67.7,84.7) C)(64.2,88.2) D)(74.6,77.8) E)(69.2,83.2)

Multiple Choice