3. Normally distributed IQ scores have a mean of 100 and a standard deviation of 15. Use the standard z- table to answer the ff questions: What is the probability of randomly selecting someone with an IQ score that is (a) less than 80? (b) greater than 136? (c) between 95 and 110? (d) What IQ score corresponds to the 90th percentile? (e)the middle 30% of IQs fall between what two values?

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