The random sample shown below was selected from a normal distribution 7,5,5,5,7,7 Complete parts a and b. a. Construct a
Posted: Sun Oct 03, 2021 3:08 pm
The random sample shown below was selected from a normal distribution 7,5,5,5,7,7 Complete parts a and b. a. Construct a 99% confidence interval for the population mean (4.20 7.80) (Round to two decimal places as needed.) b. Assume that sample mean x and sample standard deviations 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? The confidence interval is ((Round to two decimal places as needed.)