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math

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If the hourly sales at a certain register in a supermarket are normally distributed with a mean of $650 and a standard deviation of $60, find the probability that the sales during a randomly selected hour are greater than $800.

  • math -

    Z = (score-mean)/SD

    Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion related to the Z score above.

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