Use the given degree of confidence and sample data to
construct a confidence interval for the population mean μ. Assume
that the population has a normal distribution.
A sociologist develops a test to measure attitudes towards public transportation, and 27 randomly selected subjects are given the test. Their mean score is x ¯ = 76.2 and their standard deviation is s = 21.4. Construct the 95% confidence interval for the mean score of all such subjects.
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