Question: 6.52 The time intervals between dial-up connections to a computer center from remote terminals are exponentially distributed with a mean of 15 seconds. Find the

6.52 The time intervals between dial-up connections to a computer center from remote terminals are exponentially distributed with a mean of 15 seconds.

Find the mean, variance, and probabilitydistribution of the waiting time from the opening of the computer center until the fourth dial-up connection from a remote terminal.

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