A television station sells advertising in 15-, 30-, 60-, 90- and 120-minute blocks. The distribution of sales for one 24-hour day is: 1. Length in seconds 15 30 60 90 120 Probability 0.134 0.786 0.053...

A television station sells advertising in 15,30,60,90,120 minute blocks. The distribution of sales for one 24-hour day is:

Length in seconds: 15 30 60 90 120

Probability: .134 0.786 0.053 0.006 .023 find the mean variance and standard deviation of the probability

Extracted text: A television station sells advertising in 15-, 30-, 60-, 90- and 120-minute blocks. The distribution of sales for one 24-hour day is: 1. Length in seconds 15 30 60 90 120 Probability 0.134 0.786 0.053 0.006 0.023 Find the mean, variance and standard deviation of the probability distribution.