Mathematics, 13.06.2020 23:57 hokamidat

1. A simple random sample of 60 items resulted in a sample mean of 80. The population standard deviation is 15.a. Compute the 95 % confidence interval for the population mean. b. Assume that the sample mean was obtained from a sample of 120 items. Provide a 99% confidence interval for the population mean.

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1. A simple random sample of 60 items resulted in a sample mean of 80. The population standard devia...