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The size of all customer orders at XYZ Company is normally distributed with a mean of $100 and a standard devation of $8. Find the

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The size of all customer orders at XYZ Company is normally distributed with a mean of $100 and a standard devation of \$8. Find the probability that a random sample of 20 existing customer orders will have an average of >$99. (Show as a percent and round to 1 decimal place.) %

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