Question: Some IQ tests are standardized to a Normal model N(100,13). a) What cutoff value bounds the highest 10% of allIQs? b) What cutoff value bounds

Some IQ tests are standardized to a Normal model N(100,13).

a) What cutoff value bounds the highest 10% of allIQs?

b) What cutoff value bounds the lowest 20% of theIQs?

c) What cutoff values bound the middle 70% of theIQs?

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