A retail variety store that advertises extensively by mail circulars expects a sale with 20% probability. Suppose 30 prospects are randomly selected from a city-wide mailing. c. What is the probability that at least 12 sales will result from mailing to the 30 prospects? 0.983877 0.423674 0.009493 0.5
A retail variety store that advertises extensively by mail circulars expects a sale with 20% probability. Suppose 30 prospects are randomly selected from a city-wide mailing. c. What is the probability that at least 12 sales will result from mailing to the 30 prospects? 0.983877 0.423674 0.009493 0.5
Chapter8: Sequences, Series,and Probability
Section8.7: Probability
Problem 11ECP: A manufacturer has determined that a machine averages one faulty unit for every 500 it produces....
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Transcribed Image Text:A retail variety store that advertises extensively by mail circulars expects a sale with
20% probability. Suppose 30 prospects are randomly selected from a city-wide
mailing.
c. What is the probability that at least 12 sales will result from mailing to the 30
prospects?
0.983877
0.423674
0.009493
0.5
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