Statistics & Probability

Problem 4 A car is advertised as having a gas mileage rating of at least 30 miles/gallon in highway driving. Suppose the miles per gallon obtained in 10 independent experiments are 26, 24, 20, 25, 27, 25, 28, 30, 26, 33. (a) Test. whether the claim of the advertisement is true at the 10 percent level of signicance. Use the test statistic approach. (11) What astzumptiom; have you made in part (a)