An attendant at a car wash is paid according to the number

Chapter 5, Problem 4.6

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QUESTION:

An attendant at a car wash is paid according to the number of cars that pass through. Suppose the probabilities are 1/12, 1/12, 1/4, 1/4, 1/6, and 1/6, respectively, that the attendant receives $7, $9, $11, $13, $15, or $17 between 4:00 P.M. and 5:00 P.M. on any sunny Friday. Find the attendants expected earnings for this particular period.

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QUESTION:

An attendant at a car wash is paid according to the number of cars that pass through. Suppose the probabilities are 1/12, 1/12, 1/4, 1/4, 1/6, and 1/6, respectively, that the attendant receives $7, $9, $11, $13, $15, or $17 between 4:00 P.M. and 5:00 P.M. on any sunny Friday. Find the attendants expected earnings for this particular period.

ANSWER:

Step 1 of 2

 

The probability distribution table is as follows.

\(x\)

$7

$9

$11

$13

$15

$17

\(f(x)\)

1/12

1/12

1/4

1/4

1/6

1/6

 

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