# Question

Assume that 10% of us believe that college is not a good investment (based on a survey in USA Today).

a. Let A denote the event of selecting someone who believes that college is not a good investment. What does the event A denote?

b. Find the value of P(A).

c. Find the probability of randomly selecting three different people and finding that each of them has the belief that college is not a good investment.

d. The given rate of 10% is based on results from Internet users who chose to respond to a question posted on the USA Today web site. What is this type of sample called? What does this suggest about the accuracy of the 10% rate?

a. Let A denote the event of selecting someone who believes that college is not a good investment. What does the event A denote?

b. Find the value of P(A).

c. Find the probability of randomly selecting three different people and finding that each of them has the belief that college is not a good investment.

d. The given rate of 10% is based on results from Internet users who chose to respond to a question posted on the USA Today web site. What is this type of sample called? What does this suggest about the accuracy of the 10% rate?

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