Question 1098408
You look in the Normal Distribution tables of z-scores
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We want the z-score associated with a probability of 0.85, that z-score is 1.03, if we use a probability to z-score calculator, we get 1.036
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Probability values are from 0 to 1, if the probability to the right is 0.15(area under curve), then 1 - 0.15 = 0.85 is probability(area to the left) and the z-value is 1.036
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