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Diano4ka-milaya [45]
3 years ago
14

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 attendant’s expected earn- ings for this particular period.
Business
1 answer:
Paladinen [302]3 years ago
5 0

Answer: The attendant’s expected earn- ings for the period between 4:00 P.M and 5:00 P.M is <u>$12,67.</u>

Explanation: <u>The discrete random variable X</u> represent attendant’s earnings.

The expected value of the discrete random variable X is

<h2>= E (x) = ∑× f(x)</h2><h2>= 7 × 1/12 + 9 × 1/12 + 11 × 1/4 + 13 × 1/4 + 15 × 1/6 + 17 × 1/6 = <u>12,67.</u></h2><h2><u /></h2>
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