Suppose that a committee is studying whether or not there is waste of time in our judicial system. It is interested in the mean amount of time individuals waste at the courthouse waiting to be called for jury duty. The committee randomly surveyed 81 people who recently served as jurors. The sample mean wait time was seven hours with a sample standard deviation of three hours. Required:
a. Define the random variables X and X¯in words. X is amount of time individuals waste at the courthouse waiting to be called for jury duty. X- is mean amount of time that sample of 81 people who recently served at jurors.
b. Which distribution should you use for this problem? Explain your choice.
c. Construct a 95% confidence interval for the population mean time wasted.