The middle 50% is covered by the mean + .6745 times the standard deviation.

.6745 * 103 = 69.47

792.00 + 69.47 = {722.53, 861.47}

Half the contributions are between $722.53 and $861.47.

.6745 * 103 = 69.47

792.00 + 69.47 = {722.53, 861.47}

Half the contributions are between $722.53 and $861.47.

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