SOLUTION: Suppose the monthly demand for automobile tires at a tire dealer is normally distributed with a mean of 270 tires and a standard deviation of 50 tires. How many tires must the stor

Question 868935: Suppose the monthly demand for automobile tires at a tire dealer is normally distributed with a mean of 270 tires and a standard deviation of 50 tires. How many tires must the store have in inventory at the beginning of each month in order to meet demand 95 percent of the time?
Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!



Hi

z = invNorm(.95) = 1.6449

1.6449 = (X - 270)/50

1.6449*50 + 270 = X = 353(rounded Up) on hand 

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