# Probability problems

We are using a chart on standard normal (z) distribution: cumulative area from the LEFT showing Negative x Scores on one side and Positive (z) scores on the other.

a. P(z>2.61).

b. P(-1.62 < z < 2.81).

c. The z-score that would create a right tail of 31%.

d. The z-score that would create a left tail of 6.5%.

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#### Solution Summary

This solution gives the step by step method for computing probabilities based on Z score (see attachment for figures).

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