17- Suppose the amount of time one spends in a bank is exponentially distributed with mean 10 minutes. What is the probability that the customer will spend more than 15 minutes in the bank? a) 0.24 b) 0.26 c) 0.22 d) 0.20 e) 0.28
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Using the formula P(X < x) = 1 - e^(-x/10), where x is the time in minutes. P(X < 15) = 1 - e^(-15/10) P(X < 15) = 1 - e^(-1.5) P(X < 15) = 1 - 0.2231 P(X < 15) = 0.7769 Show more…
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