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describe probability that area under a normal curve.

describe Central Limit Theorem Area under a Curve

The manufacturer of a coffee provision machine claims the ounces per cup is normally distributed with population mean equal to 8 ounces as well as standard deviation equal to 0.9 ounces. If 50 cups of coffee were measured describe what the probability is that: The sample mean per cup is less than 7.8 ounces?

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