Question: Some IQ tests are standardized to a Normal model N (100,12). a) What cutoff value bounds the highest 5% of all IQs? b) What cutoff

Some IQ tests are standardized to a Normal model N (100,12). a) What cutoff value bounds the highest 5% of all IQs? b) What cutoff value bounds the lowest 25% of the IQs? c) What cutoff values bound the middle 70% of the IQs? d) What cutoff value bounds the lowest 65% of the IQs? a) The cutoff value is (Round to one decimal place as needed.) b) The cutoff value is 91.9. (Round to one decimal place as needed.) c) The cutoff values are and (Use ascending order. Round to one decimal place as needed.) d) The cutoff value is (Round to one decimal place as needed.)

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