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The average diameter of sand dollars on a certain island is 3.50 centimeters with a standard...

The average diameter of sand dollars on a certain island is 3.50 centimeters with a standard deviation of 1.00 centimeters. If 25 sand dollars are chosen at random for a collection, find the probability that the average diameter of those sand dollars is more than 3.28 centimeters. Assume that the variable is normally distributed.

0.636

0.800

0.364

0.864

math   Statistics-And-Probability   
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