SOLUTION: The time it takes for a telephone sales associate to complete a customer order is referred to as �handle time.� The handle times for a catalog company that sells casual clothing ha

Question 855906: The time it takes for a telephone sales associate to complete a customer order is referred to as �handle time.� The handle times for a catalog company that sells casual clothing have historically followed a Normal distribution with a mean of 6 minutes and a standard deviation of 0.8 minutes. The company has set a goal to complete a telephone order within 7.5 minutes.
Using the Normal distribution model, what is the the probability that a handle time exceeds the goal?
a. 0.34
b. 0.0304
c. 0.4696
d. 0.5
Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!

 

Hi,

z = (7.5-6)/.8 = 1.5/.8 = 1.875,  NORMSDIST(1.875) = .9696

  P(z  ≥  1.875) = 1 - .9696 = .0304 

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