O to = -9.165 Fifteen Smart Cars were randomly selected and the highway mileage of each was noted. The analysis yielded a mean of 47 miles per gallon and a standard deviation of 5 miles per gallon....

Extracted text: O to = -9.165 Fifteen Smart Cars were randomly selected and the highway mileage of each was noted. The analysis yielded a mean of 47 miles per gallon and a standard deviation of 5 miles per gallon. Which of the following would represent a 90% confidence interval for the average highway mileage of all Smart Cars? Select one: O 47 +1.761- O 47 +1.645E 15 O47t1.753- 15 O 47 ±1345E NEXT PAGE