Question: 3. A simple random sample with = 50 provided a sample mean of 22 and a sample standard deviation of 4. a) What is the

3. A simple random sample with = 50 provided a sample mean of 22 and a sample standard deviation of 4. a) What is the standard error of the sample mean? (4 points) b) Develop a 95% confidence interval for the population mean. (9 points)

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