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The random variable X is the number of golf balls ordered by customers at a pro shop. Its probability distribution is given in the table.

The random variable X is the number of golf balls ordered by customers at a pro shop. Its probability distribution is given in the table. Find the mean of the random variableRound the answer to two decimal places when necessary.

x | 3 6 9 12 15

P(X=x) | 0.14, 0.01, 0.36, 0.39, 0.10

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