A researcher obtains a sample from an unknown population and computes a sample mean of M = 43 with a
Question: A researcher obtains a sample from an unknown population and computes a sample mean of M = 43 with a standard deviation of s = 6.
a. If the sample has n = 16 scores, compute an 80% confidence interval to estimate the unknown population mean.
b. If the sample has n = 36 scores, compute an 80% confidence interval to estimate the unknown population mean.
c. Comparing your answers for a and b, describe how sample size influences the width of a confidence interval.
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Solution Format: Word Document
Solution Format: Word Document
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