SOLUTION: Suppose the probability of making a sale on any given telephone call is 0.23. Find the probability that the first sale on any given day will occur on the fourth or fifth sales call

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Question 871139: Suppose the probability of making a sale on any given telephone call is 0.23. Find the probability that the first sale on any given day will occur on the fourth or fifth sales call.
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!


Hi

p(sale) = .23,   n = 5

P(x ≥ 4) = 1 - binomcdf(5, .23, 3) = .0114