Develop 95 percent confidence interval for population mean

Reference no: EM13297333

a simple random sample of 20 items from a normal population resulted in a sample mean of 17.25 and a sample standard devation of 3.3
a. develop a 90% confidence interval for the population mean.
b. develop a 95% confidence interval for the population mean.
c. develop a 99% confidence interval for the population mean.

Reference no: EM13297333

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