Z = (score-mean)/SD
A) After calculating the Z scores, find table in the back of your statistics text labeled something like "areas under normal distribution" to find the related proportion.
B) Using same table, find Z score for that percentage. Use it to calculate score.
Given that the mean is 40 and the standard deviation is 1.5:
A) what is the probability of selecting a value between 39 and 46
B)what value will allow only 15% of the data to be greater than it
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