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Calculate the z scores, then use the z table. please show work and explain Based on...

Calculate the z scores, then use the z table. please show work and explain Based on the Normal model N (100, 16) describing IQ scores from Exercise 24, what percent of applicants would you expect to have scores a) over 80? b) under 90? c) between 112 and 132? d) over 125?

Calculate the z scores based on the probabilities, then back out the x values. please show work and explain Based on the model N(0.062, 0.018) for quarterly returns from Exercise 23, what are the cutoff values for the a) highest 10% of these funds? b) lowest 20%? c) middle 40%? d) highest 80%?

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