The length of time for one individual to be served at a cafeteria is a random...

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The length of time for one individual to be served at a cafeteria is a random...

The length of time for one individual to be
served at a cafeteria is a random variable having an exponential distribution with a mean of 6 minutes. What
is the probability that a person is served in less than 4
minutes on at least 5 of the next 7 days?

math Statistics-And-Probability

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