Assume that the same sample mean was obtained from a sample

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A simple random sample of 60 items resulted in a sample mean of 10. The population standard deviation is 15.

a. Compute the 95% confidence interval for the population mean. Round your answers to one decimal place.

b. Assume that the same sample mean was obtained from a sample of 130 items. Provide a 95% confidence interval for the population mean. Round your answers to two decimal places.

Reference no: EM13627032

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