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A simple random sample of 36 items resulted in a sample mean of 70. The population standard deviation is 10. (A). Compute the 98.4% confidence

A simple random sample of 36 items resulted in a sample mean of 70. The population standard deviation is 10.

(A). Compute the 98.4% confidence interval for the population mean.

(B). What is the effect of a larger sample size on the interval estimate?

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