TV Commercials The mean duration oftelevision commercials on a given network is
Chapter 2, Problem 75(choose chapter or problem)
TV Commercials The mean duration oftelevision commercials on a given network is 75seconds, with a standard deviation of 20 seconds.Assume that durations are approximately normallydistributed.a. What is the approximate probability that acommercial will last less than 35 seconds?b. What is the approximate probability that acommercial will last longer than 55 seconds?
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