A local television station sells 15-sec, 30-sec, and
Chapter 0, Problem 7.34(choose chapter or problem)
A local television station sells 15-sec, 30-sec, and 60-sec advertising spots. Let x denote the length of a randomly selected commercial appearing on this station, and suppose that the probability distribution of x is given by the following table: x 15 30 60 p(x) .1 .3 .6a. Find the average length for commercials appearing onthis station.b. If a 15-sec spot sells for $500, a 30-sec spot for $800,and a 60-sec spot for $1000, find the average amount paidfor commercials appearing on this station. (Hint: Considera new variable, y cost, and then find the probability distributionand mean value of y.)
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