# Question: The Internal Revenue Service is studying the category of charitable

The Internal Revenue Service is studying the category of charitable contributions. A sample of 25 returns is selected from young couples between the ages of 20 and 35 who had an adjusted gross income of more than $100,000. Of these 25 returns, five had charitable contributions of more than $1,000. Four of these returns are selected for a comprehensive audit.

a. Explain why the hypergeometric distribution is appropriate.

b. What is the probability exactly one of the four audited had a charitable deduction of more than $1,000?

c. What is the probability at least one of the audited returns had a charitable contribution of more than $1,000?

a. Explain why the hypergeometric distribution is appropriate.

b. What is the probability exactly one of the four audited had a charitable deduction of more than $1,000?

c. What is the probability at least one of the audited returns had a charitable contribution of more than $1,000?

## Answer to relevant Questions

The law firm of Hagel and Hagel is located in downtown Cincinnati. There are 10 partners in the firm; 7 live in Ohio and 3 in northern Kentucky. Ms. Wendy Hagel, the managing partner, wants to appoint a committee of 3 ...A study of the checkout lines at the Safeway Supermarket in the South Strand area revealed that between 4 and 7 p.m. on weekdays there is an average of four customers waiting in line. What is the probability that you visit ...Refer to the Real Estate data, which report information on homes sold in the Goodyear, Arizona, area last year.a. Create a probability distribution for the number of bedrooms. Compute the mean and the standard deviation of ...The mean of a normal probability distribution is 500; the standard deviation is 10.a. About 68% of the observations lie between what two values?b. About 95% of the observations lie between what two values?c. Practically all ...The distribution of the number of viewers for the American Idol television show follows a normal distribution with a mean of 29 million and a standard deviation of 5 million. What is the probability next week’s show ...Post your question