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The amount of coffee dispensed by a drink vending machine is normally distributed with a mean...

The amount of coffee dispensed by a drink vending machine is normally distributed with a mean of 12.1 oz. What is the probability that a randomly selected cup of coffee has more than 12.8 oz? Assume that the standard deviation for all drink vending machines is 0.38

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Expert Solution

Let "X" be the amount of coffee dispensed by a drink vending machine.

Refer Standard normal table/Z-table to find the probability or use excel formula "=NORM.S.DIST(1.84, TRUE)" to find the probability.

The probability that a randomly selected cup of coffee has more than 12.8 oz is

orchestra answered 2 years ago
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