[See Solution] A sociologist develops a test to measure attitudes about the welfare system and 25 randomly selected subjects are given the test. Their mean
Question: A sociologist develops a test to measure attitudes about the welfare system and 25 randomly selected subjects are given the test. Their mean score is 77.9 and their standard deviation is 21.4. Construct the 99% confidence interval for the mean of the scores of all subjects.
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[Solution] If 69% of 1000 drunk drivers were apprehended in 2005,
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