A local television station sells 15 second, 30 second, and 60 second advertising spots. Let x denote

Question:

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 of x is given by the following table:

What is the mean length for commercials appearing on this station?

Distribution
The word "distribution" has several meanings in the financial world, most of them pertaining to the payment of assets from a fund, account, or individual security to an investor or beneficiary. Retirement account distributions are among the most...