SOLUTION: An IQ test has a mean of 100 and a standard deviation of 15. Assume a normal distribution. What is the probability that someone scores more than 95 points?

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Question 1152771: An IQ test has a mean of 100 and a standard deviation of 15. Assume a normal distribution. What is the probability that someone scores more than 95 points?
Answer by VFBundy(438) About Me  (Show Source):
You can put this solution on YOUR website!
Z-score = %2895+-+mean%29%2FSD = %2895+-+100%29%2F15 = -0.33

Look up -0.33 on a z-table. The result is 0.3707. This is the probability that someone scores LESS THAN 95. Since we want to find the probability someone scores MORE THAN 95, we compute 1 - 0.3707, and that result is 0.6293.