Refer to the attachment.
a. Develop a 90 percent confidence intervalfor the meanpercent of the population over 65 years.
b. Develop a 90 percent confidence interval for the mean energy use.
Continuous Probability Distributions
Refer to the attachment…
a. Develop a 90 percent confidence interval for the mean percent of the population over 65 years.
Standard Error 0.600287
Standard Deviation 3.232646
This solution contains over 200 words and develops a 90% confidence interval.