LESSON 9.3 - ESTIMATING A DIFFERENCE BETWEEN TWO MEANS
DO BIGGER APARTMENTS COST MORE MONEY?
A college student wants to compare the cost of one- and two-bedroom apartments near campus. She collects the following data on monthly rents (in dollars) for a random sample of 10 apartments of each type.
1 bedroom: 500 650 600 505 450 550 515 495 650 395
2 bedroom: 595 500 580 650 675 675 750 500 495 670
1. Construct and interpret a 90% confidence interval for the difference between the mean monthly rents for all one- and two-bedroom apartments near the college campus.
2. Based on your interval, is there convincing evidence of a difference in the population means? Explain.
Statistic