# Question

Apple products have become a household name in America with 51% of all households owning at least one Apple product (CNN, March 19, 2012).

a. What is the probability that two in a random sample of four households own an Apple product?

b. What is the probability that all four in a random sample of four households own an Apple product?

c. In a random sample of 100 households, find the expected value and the standard deviation of the number of households that own an Apple product.

a. What is the probability that two in a random sample of four households own an Apple product?

b. What is the probability that all four in a random sample of four households own an Apple product?

c. In a random sample of 100 households, find the expected value and the standard deviation of the number of households that own an Apple product.

## Answer to relevant Questions

Twenty percent of U.S. mortgages are “underwater” (The Boston Globe, March 5, 2009). A mortgage is considered underwater if the value of the home is less than what is owed on the mortgage. Suppose 100 mortgage holders ...A professor has learned that three students in her class of 20 will cheat on the exam. She decides to focus her attention on four randomly chosen students during the exam.a. What is the probability that she finds at least ...Organizers of an outdoor summer concert in Toronto are concerned about the weather conditions on the day of the concert. They will make a profit of $25,000 on a clear day and $10,000 on a cloudy day. They will make a loss of ...Facing the worst economic climate since the dot-com bust in the early 2000s, high-tech companies in the United States search for investment opportunities with cautious optimism (USA TODAY, February 17, 2009). Suppose the ...For a continuous random variable X, P (20 X ≤ 40) 5 0.15 and P(X. 40) 5 0.16 . Calculate the following probabilities. a. P(X< 40) b. P(X< 20) c. P(X= 40)Post your question

0