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The random sample shown below was selected from a normal distribution. 5,5,8,9,4,5 A. Construct a 95%...

The random sample shown below was selected from a normal distribution.

5,5,8,9,4,5

A. Construct a 95% confidence interval for the population mean.

B. Assume that sample mean x and sample standard deviation s remain exactly the same as those you just calculated but that are based on a sample of n=25 observations. repeat part a. what is the effect of increasing the sample size on the width of the confidence intervals?

Math   Statistics-And-Probability   
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