Human IQ scores are approximately normally distributed with the mean 100 and standard deviation 15. Determine the minimum IQ scores for the top 10 % of the population
Added by Antonio F.
Step 1
The z-score is a measure of how many standard deviations an element is from the mean. In this case, we want to find the z-score that corresponds to the point where 90% of the population is below and 10% is above. Looking up in the z-table or using a z-score Show more…
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