Solution-Let the number of phone calls received by a

Let the number of phone calls received by a switchboard during a 5-minute interval be a random variable X with probability function

a) Determine the probability that X equals 0, 1, 2, 3, 4, 5, and 6.

b) Graph the probability mass function for these values of x.

c) Determine the cumulative distribution function for these values of X.

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Let the number of phone calls received by a switchboard : let the number of phone calls received by a switchboard during a 5-minute interval be a random variable x with

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