A Sociologist Develops a Test to Measure Attitudes About Public

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 standarddeviation is 21.4.Construct the 95% confidence interval for the mean score of all such subjects.

A) (64.2, 83.2)
B) (64.2, 88.2)
C) (74.6, 77.8)
D) (69.2, 83.2)
E) (67.7, 84.7)

Correct Answer:

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