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According to Business Week , Maternity Chic, a purveyor of designer maternity wear, sells dresses and pants priced around $150 each for an average total sale of $1,200. The total sale has a normal distribution with a standard deviation of $350.
a. Calculate the probability that a randomly selected customer will have a total sale of more than $1,500.
b. Compute the probability that the total sale will be within ± 2 standard deviations of the mean total sales.
c. Determine the median total sale. |
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