1. Glucose levels in patients free of diabetes are assumed to follow a normal distribution with a mean of 113 and a standard deviation of 13. What proportion of patients have glucose levels exceeding 120?

2. Suppose that the probability that a child living in an urban area in the United States is obese is 22%. If a social worker sees 20 children living in urban areas, answer the following: What is the probability that none are obese?

3. The data shown below describe children in four countries in terms of adequate dental care. What is the probability that a child from Mexico has adequate dental care?

	Adequate Dental Care	Inadequate Dental Care
United Kingdom	2539	176
United States	4563	209
France	1298	307
Mexico	2874	256

4. The faculty and staff at Dana-Farber Cancer Institute in Boston are required to undergo a tuberculosis test each year. Use the following table to answer the questions below. If a Dana-Farber faculty or staff worker goes in to have a TB test, what is the chance of him/her getting a negative test result?

Test Result	Tuberculosis Yes No	Total
Positive	4995	99,950	104,945
Negative	5	9,895,050	9,895,055
Total	5,000	9,995,000	10,000,000