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Question 206:

The variable Z has a standard Normal distribution.
a) Find the number z that has cumulative proportion 0.85.
b) Find the number z such that the event Z

If you need help with the concepts covered in this question (like z-scores and the normal-curve) you can download a visual and easy to understand Crash Course in Z-scores and an Excel Calculator which will do everything you need to do with z-scores.

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