Are the measurements similar? Refer to Exercise 6.30 (page

Chapter , Problem 6.73

(choose chapter or problem)

Are the measurements similar? Refer to Exercise 6.30 (page 371). In addition to the computers calculations of miles per gallon, the driver also recorded the miles per gallon by dividing the miles driven by the number of gallons at each fill-up. The following data are the differences between the computers and the drivers calculations for that random sample of 20 records. The driver wants to determine if these calculations are different. Assume that the standard deviation of a difference is s 3.0. 5.0 6.5 20.6 1.7 3.7 4.5 8.0 2.2 4.9 3.0 4.4 0.1 3.0 1.1 1.1 5.0 2.1 3.7 20.6 24.2 (a) State the appropriate H0 and Ha to test this suspicion. (b) Carry out the test. Give the P-value, and then interpret the result in plain language.