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What two parameters of the distribution

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A popular country singer has just released a new album. Assume that the number of album sales per day is normally distributed.

a. What two parameters of the distribution would you need to be able to determine the probability of sales on a particular day exceeding 100 units?

b. If the probability of sales exceeding 100 units is 20% and the mean daily sales is 86 units, then what is the standard deviation of the distribution?

Reference no: EM132391573

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