In a store, 65 percent of purchases are made by credit card, on a randomly selected day 17 purchases were made. a) What is the probability that exactly 7 purchases were paid for by credit card? b) What is the probability of finding that more than 13 purchases were paid for by credit card? c) What is the probability of finding that at most 6 purchases were paid for by credit card? d) Find the expected value of the probability distribution E(x) and the standard deviation
In a store, 65 percent of purchases are made by credit card, on a randomly selected day 17 purchases were made. a) What is the probability that exactly 7 purchases were paid for by credit card? b) What is the probability of finding that more than 13 purchases were paid for by credit card? c) What is the probability of finding that at most 6 purchases were paid for by credit card? d) Find the expected value of the probability distribution E(x) and the standard deviation
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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In a store, 65 percent of purchases are made by credit card, on a randomly selected day 17 purchases were made.
a) What is the
b) What is the probability of finding that more than 13 purchases were paid for by credit card?
c) What is the probability of finding that at most 6 purchases were paid for by credit card?
d) Find the
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