The Standford -Binet IQ test is scaled so that he scores have a mean of 100...
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The Standford -Binet IQ test is scaled so that he scores have a mean of 100 and a standard deviation of 15.
What is the percentage of scores that are less than 115?
Homework Answers
| for normal distribution z score =(X-μ)/σ | |
| here mean= μ= | 100 |
| std deviation =σ= | 15.0000 |
percentage of scores that are less than 115 :
| probability = | P(X<115) | = | P(Z<1)= | 0.8413~ 84.13% |
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