Asked by Dianne
IQ scores are normally distributed with a mean u = 100 and a standard deviation o =15. Based on distribution, determine
% of IQ scores between 100 and 120 =
% of IQ scores between 100 and 120 =
Answers
Answered by
PsyDAG
mean = 100
Z = (score-mean)/SD
Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion between score and mean related to the Z score. Multiply by 100.
Z = (score-mean)/SD
Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion between score and mean related to the Z score. Multiply by 100.
Answered by
kileen
the mean IQ in a certain sorority is 120 with SD of 5. What is the probability of selecting a random student whose IQ between 130 and 135?
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