1) The gas mileage for a certain model of car is known to have a standard deviation of 4 mi/gallon. A simple random sample of 64 cars of this model is chosen and found to have a mean gas mileage of 27.5 mi/gallon. Construct a 96.5% confidence interval for the mean gas mileage for this car model. a) [19.068, 35.932] b) [26.594, 28.406] c) [26.446, 28.554] d) [27.368, 27.632] e) [20.252, 34.748] f) None of the above

2)

An SRS of 30 students at UH gave an average height of 5.6 feet and a standard deviation of .3 feet. Construct a 90% confidence interval for the mean height of students at UH.

a) [5.583, 5.617]

b) [5.507, 5.693]

c) [4.100, 7.400]

d) [4.350, 7.050]

e) [5.090, 6.110]

f) None of the above