3E.1 Given the following two-way contingency table.

a. Of those with the disease, what percentage test positive?

b. Of those who test positive, what percentage have no disease?

	Disease	No Disease
Test Positive	9	99
Test Negative	1	891

4B.1 David invests $15,000 in an account that pays simple interest, 1.5% of the investment, annually. What will the account balance be after 15 years? How much interest will be earned then?

4B.2 $85,000 is invested at an APR of 2.52 % for 15 years.If interest is compounded quarterly, what is the amount of money after 15 years? If interest is compounded monthly, what is the amount of money after 15 years?

4B.3 Suppose you invest $25,000 in a mutual fund account at an APR of 2.59%. What is the account balance after 48 months if compounded monthly?

4C.1 Your goal is to raise a college fund for your child. Suppose you find a fund that offers an APR of 5%. How much should you deposit monthly to accumulate $85,000 in 15 years?

4C.2 Jane invests on a retirement fund, where she contributes $350 per month, and the investment pays an APR of 1.25% (compounded monthly). What is the balance after 15 years?

4D.1 A student loan of $40,000 at a fixed APR of 4% for 10 years. Calculate the monthly payment, determine the total amount paid over the term of the loan, and find the percentage that is paid for interest.

4D.2 Consider a home mortgage of $250,000 at a fixed APR of 3.75 % for 30 years. a. Calculate the monthly payment. b. How much will you pay in total after you pay off your mortgage? Round your answer to the nearest Ones place.

4D.3 Consider another home mortgage of $250,000 at a fixed APR of 4.125 % for 20 years. a. Calculate the monthly payment. b. How much will you pay in total after you pay off your mortgage? c. Compare the answer with the answer of 4D.2. Which one is a better deal? Round your answer to the nearest Ones place.

4D.4 You pay your tuition $5,800 with your credit card, and you decide to pay off the $5,800 in three years at an APR of 19%. Assume that you make no further purchases with the credit card. a. What is your monthly payment? b. How much money in interest would you have paid over?

5A.1 A recent telephone poll of 530 randomly selected people in the U.S. revealed that 6 in 10 people believe there has been progress in finding a cure for cancer in the last 10 years. Describe the population, sample, and sample statistics.

5A.2 Identify the sampling method. An IRS (Internal Revenue Service) auditor randomly selects for audits 100 taxpayers in each of the filing status categories: single, head of household, married filing jointly, and married filing separately.

5C.1 Make a histogram for the data set about students' test scores {64, 88, 97, 65, 74, 71,83, 89, 88, 78, 92, 66, 93, 78, 81} based on group (e.g., 0-9, 10-19, 20-29,...) and frequency.