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considers himself a professional baseball fan. Find the probability that the number who consider themselves baseball fans is a) exactly 5, b) at least 6, and c) less than 4.
distribution. Then determine if the events are unusual. If convenient, use the appropriate probability table or technology to find the probabilities.
Assume the probability that you will make a sale on any given telephone call is 0.11. Find the probability that you (a) make your first sale on the fifth call, (b) make your sale on the first, second, or third call, and (c) do not make a sale on the first three calls.
distribution. Then determine if the evens are unusual.
A newspaper finds that the mean number of typographical errors per page is nine. Find the probability that (a) exactly 6 typographical errors are found on a page, (b) at most 6 typographical errors are found on a page, and (c) more than 6 typographical errors are found on a page.
and ask each to name the reason he or she uses credit cards. Find the probability that the number of students who say they use credit cards because of the rewards programs is (a) exactly two, (b) more than two, and (c) between two and five inclusive. Round to the nearest thousandth
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