The probability distribution of the number of hours cars are parked has been estimated as follows.

x 1 2 3 4 5 6 7 8

p(x) .24 .18 .13 .10 .07 .04 .04 .20

The mean is equal to:

1*0.24 + 2*0.18 + 3*0.13 + 4*0.1 + 5*0.07 +...

(The entire section contains 87 words.)

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