Use the program in Exercise 5.5.2 to find a 95% confidence interval for µ for the income data in Exercise 5.2.3. Alter CONFINT to provide 80, 90, 95, or 99% confidence intervals, where the program...

Use the program in Exercise 5.5.2 to find a 95% confidence interval for µ for the income data in Exercise 5.2.3.

Alter CONFINT to provide 80, 90, 95, or 99% confidence intervals,

where the program requests the confidence coefficient 1 - a.