Question

o A travel website would like to estimate the difference between the average rental price of a car with automatic transmission versus the average rental price of a car with manual transmission at a certain airport. The table below shows the average one week rental prices for two random samples, as well as the population standard deviations and sample sizes for each type of car. Complete parts a and b. Sample mean Sample size Population standard deviation Automatic $398.20 50 $20 Manual $357.30 36 $23 a. Construct a 95% confidence interval to estimate the difference in the average cost of a one-week rental between these two types of cars at the airport Let the cars with automatic transmissions de population 1 and the cars with manual transmissions be population 2. The confidence interval is ( ss). (Round to the nearest cent as needed.) b. Based on the results from part a, can you conclude that a difference exists in the average rental price of the two types of cars? 1 1 1 1 Since the confidence interval two types of cars include $0, there is evidence to conclude that a difference exists in the average price of the 22 22 23 24 25 26

Answer 1

9 95% internal es confidence (n-22) i to 2 T +32 398.20 You So 36 is 35+30) † 1964,(20) +(23) [ 40 40.9 € 9. 3372 (31056, 50-24) , the confidence Caterual ( $51.56], $ 50.24 Sean confidence include $0, a sufficient) endence to conclude areeage price of the caterual does not there Is that а difference existe in the the type of of cars