Multiple Choice
Find the confidence interval specified. Assume that the population is normally distributed.
-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) 69.2 to 83.2
B) 67.7 to 84.7
C) 64.2 to 88.2
D) 74.6 to 77.8
Correct Answer:
Verified
Correct Answer:
Verified
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