Asked by Joanna

suppose that iq scores have a bell-shaped distribution with a mean of 97 and a standard deviation of 17. using the empirical rule, what percentage of iq scores are greater than 46? please do not round your answer.
Answered by scott
46 is 3 standard deviations below the mean
Answered by PsyDAG
Here is the process.

Z = (score-mean)/SD

Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability greater than Z.