SOLUTION: Good Time Movie Theaters has studied the spending habits of customers at their concession counters to find the data normally distributed with a mean of $13.40 and a standard deviat

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Question 440003: Good Time Movie Theaters has studied the spending habits of customers at their concession counters to find the data normally distributed with a mean of $13.40 and a standard deviation of $2.10. A theater manager wants to know the probability of a customer spending more than $17.50 at the concession stand.
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi

*Note: z+=+blue%28x+-+mu%29%2Fblue%28sigma%29

   z = (17.50-13.40)/2.10 = 1.9524

 P(z > 1.9524) = 1 -  NORMSDIST(1.9524)= 1 - .9746 = .0254