SOLUTION: The average amount a slot machine makes per month is $8000. This is after payouts. Assume the earnings are normally distributed with a standard deviation of $750. Find the amount o

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Question 1177716: The average amount a slot machine makes per month is $8000. This is after payouts. Assume the earnings are normally distributed with a standard deviation of $750. Find the amount of earnings if 15% is considered too low.
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!

Hi
Normal Distribution:    μ = $8000   σ = 750   
Find x at 15%
 z = invNorm(.15) = -1.0364
z+=blue+%28x+-+mu%29%2Fblue%28sigma%29
 -1.0364(750) +  8000 = x = 7222.7
  $7223 in earnings considered too low.

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