A score that is 12 points below the mean corresponds to a z-score of z = -3.00. What is the population standard deviation?

1 answer:

vladimir1956 [14]3 years ago

4 0

Standard deviation=4.

let the mean be 12 and the score be 0 (therefore 12 point difference.)

0-12/s=-3 (s being standard deviation)
-12/4 = -3

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