# Question: AP tests again During the 2008 2009 academic year approximately 1 7

AP tests again: During the 2008-2009 academic year. approximately 1.7 million students took one or more AP tests. Following is the frequency distribution of the number of AP tests taken by students who took one or more AP tests.

Let X represent the number of exams taken by a student who took one or more.

a. Construct the probability distribution for X.

b. Find the probability that a student took exactly one exam.

c. Compute the mean fix.

d. Compute the standard deviation ax. S. Lottery tickets: Several million lottery tickets are sold. and 60% of the tickets are held by women. Five winning tickets will be drawn at random.

Let X represent the number of exams taken by a student who took one or more.

a. Construct the probability distribution for X.

b. Find the probability that a student took exactly one exam.

c. Compute the mean fix.

d. Compute the standard deviation ax. S. Lottery tickets: Several million lottery tickets are sold. and 60% of the tickets are held by women. Five winning tickets will be drawn at random.

**View Solution:**## Answer to relevant Questions

a. What is the probability that three or fewer of the winners will be women? b. What is the probability that three of the winners will be of one gender and two of the winners will be of the other gender? If a business decision has an expected gain, is it possible to lose money? Explain. Defective rods: A grinding machine used to manufacture steel rods produces rods, 5% of which are defective. When a customer orders 1000 rods, a package of 1060 rods is shipped. with a guarantee that at least 1000 of the rods ...Pay your taxes: Among all the state income tax forms filed in a particular state, the mean income tax paid was p = $2000 and the standard deviation was a = $500. As part of a study of the impact of a new tax law, a sample of ...Compute the sample mean: II and the sample standard deviation s for the second sample.Post your question