1. Here are the prices of the car rental for a day in 8 cities of the US.
City
Rent of a car for a day ($)
Atlanta 47
Chicago 50
Dallas 53
New Orleans 45
Phoenix 40
Pittsburgh 43
San Francisco 39
Seattle 37
a. Calculate the variance and standard deviation for this data.
b. Determine a confidence interval of 95% to estimate the population variance of the rent a car prices for a day.
c. Determine a confidence interval of 95% to estimate the population standard deviation of the rent a car prices for a day.