1. MBB Problem 10.12: As an analyst for the Overseas Private Investment Corporation, you are required to report to Congress about guaranteed loans to companies doing business in Central American countries. You do not have time to find all the loans, so you take a sample of six loans. The loans have the following values, in millions of dollars: 223, 247, 187, 17, 215, 275. Use this information to calculate a mean, and put 90% confidence limits around your estimate.
2. MBB Problem 10.16 (modified): The director of the Birkfield, California, Women’s Shelter is planning the budget for next year and wants to know whether it’s reasonable to assume an average stay of 21 days OR LESS per client. The director asks her assistant to take a random sample of 35 clients who recently stayed at either of the shelter’s two locations. The sample shows an average stay of 23 days with a standard deviation of 9.3 days. What should the assistant tell the director?
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