Question: In the Normal model N(100, 16) for IQ scores from Exercise 24, what cutoff value bounds the a) Highest 5% of all IQs? b) Lowest

In the Normal model N(100, 16) for IQ scores from Exercise 24, what cutoff value bounds the
a) Highest 5% of all IQs?
b) Lowest 30% of the IQs?
c) Middle 80% of the IQs?
d) Lowest 90% of all IQs?

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