Question 1098408: Find the z-score such that the area under the standard normal curve to the left is 0.85. Given what you just found, what is the z-score such that the area under the standard normal curve to the right is 0.15? Explain.
Can someone please help me with this problem and explain how they got their answer. I'm so lost and I have no idea how to do a problem like this
Answer by rothauserc(4718)   (Show Source):
You can put this solution on YOUR website! 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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