Question: A simple random sample of 70 items resulted in a sample mean of 90 . The population standard deviation is =15. (a) Compute the 95%

A simple random sample of 70 items resulted in a

A simple random sample of 70 items resulted in a sample mean of 90 . The population standard deviation is =15. (a) Compute the 95% confidence interval for the population mean. (Round your answers to two decimal places.) to places.) to (c) What is the effect of a larger sample size on the interval estimate? A larger sample size does not change the margin of error. A larger sample size provides a larger margin of error. A larger sample size provides a smaller margin of error

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