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A sample of n = 16 scores is obtained from an unknown population. The sample has a mean of M = 46 with SS = 6000.
a. Use the sample data to make an 80% confidence interval estimate of the unknown population mean.
b. Make a 90% confidence interval estimate of μ.
c. Make a 95% confidence interval estimate of μ.
d. In general, how is the width of a confidence interval related to the percentage of confidence?

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