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gayaneshka [121]

3 years ago

14

On a normal distribution of iq test scores, with a mean of 100 and a stadard deviation of 15 points, a score of 70 would place y

ou in approximately what percentile of the population?

1 answer:

Romashka-Z-Leto [24]3 years ago

4 0

(70 -100)/15 = -2 . . . . the z-score of a score of 70

p(z < -2) ≈ 2.3%

A score of 70 would place you in approximately the 2nd percentile.

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