Question

A concerned parents group determined the number of commercials shown in each of five children’s programs...

A concerned parents group determined the number of commercials shown in each of five children’s programs over a period of time.

            

Number of commercials, X

5

6

7

8

9

Probability, P(X)

0.2

0.25

0.38

0.10

0.07

(a)        Find the mean, variance, and standard deviation for the distribution shown.

(b)        What is the probability that fewer than 6 or more than 8 commercials.

(c)        What is the probability that at least 6 commercials.

Math   Statistics-And-Probability   
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