a company is in the business of finding addresses of long lost friends
A company is in the business of finding addresses of long-lost friends. The company claims to have a 70% success rate. Suppose that you have the names of seven friends for whom you have no addresses and decide to use the company to track them.
(a) Make a histogram showing the probability of r = 0 to 7 friends for whom an address will be found.
(b) Find the mean and standard deviation of this probability distribution. (Round your answers to two decimal places.)
What is the expected number of friends for whom addresses will be found? (Round your answer to two decimal places.)
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