Find the average length for commercials

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Reference no: EM131820258

A local television station sells 15-second, 30-second, and 60-second 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       6

a. Find the average length for commercials appearing on this station.

b. If a 15-second spot sells for $500, a 30-second spot for $800, and a 60-second spot for $1000, find the average amount paid for commercials appearing on this station.

Reference no: EM131820258

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