A Sociologist Develops a Test to Measure Attitudes About Public

question 65

Multiple Choice

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)

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