SOLUTION: The score on the quiz had a mean. Of 7.0 and standard devotion of 1.0 what is the probability of a score being 7.5 or less?

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Question 882748: The score on the quiz had a mean. Of 7.0 and standard devotion of 1.0 what is the probability of a score being 7.5 or less?
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi,

mean = 7.0 and standard deviation = 1.0 

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

P( x ≤ 7.5) = P(z ≤ .5) = .6915  0r 69.15%