Question 1 It is necessarý for an automobile producer to test the hypothesis that the mean number of miles per gallon achieved by its cars is 28 against the alternative hypothesis that it is not 28....

Extracted text: Question 1 It is necessarý for an automobile producer to test the hypothesis that the mean number of miles per gallon achieved by its cars is 28 against the alternative hypothesis that it is not 28. The standard deviation of the number of miles per gallon achieved by the company's cars is 6. Suppose that the mean number of miles per gallon for a sample of 100 cars is 26.2. On the basis of this result, should the company reject the hypothesis that the population mean is 28? Why, or why not? Use a=0.05.