A random sample of 25 students was asked their opinion of the food service in the college dining hall. Students used a 7-point scale (1 horrible, 7 great) to indicate their opinion. The mean rating for the 25 students was 4.7 with a standard deviation (s) of 1.2.
A What is the 95% confidence interval for the population mean?
B Describe in words what the confidence interval tells you about the population mean.
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