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The diameter of a brand of tennis balls is approximately normallydistributed, with a mean of 2.77 inches and a standard deviation of 0.05 inch. A

The diameter of a brand of tennis balls is approximately normallydistributed, with a mean of 2.77inches and a standard deviation of 0.05inch. A random sample of 10 tennis balls is selected.

The probability is 56% that the sample mean will be between what two values symmetrically distributed around the populationmean?

The lower bound is? inches.

The upper bound is ? inches.

(Round to two decimal places asneeded.)

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