SOLUTION: Of the people who enter a large shopping mall, it has been found that 70 percent will make at least one purchase. For sample of n= 50 individuals, what is the probability that at l
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Question 925225: Of the people who enter a large shopping mall, it has been found that 70 percent will make at least one purchase. For sample of n= 50 individuals, what is the probability that at least 40 people make one or more purchases each? Answer by ewatrrr(24785) (Show Source):
You can put this solution on YOUR website! p(at least one purchase) = .70 , n = 50
P(x ≥ 40) = 1- P(x ≤ 39) = 1 - binomcdf(50, .70, 39) = 1 - .9211 = .0789 0r 7.89%
