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I'm not sure how to solve 6, 7, and 8. Can you please explain how to solve these 3 problems. = 1. 98 6. Find

I'm not sure how to solve 6, 7, and 8. Can you please explain how to solve these 3 problems.

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= 1. 98 6. Find the Z-score for which the area to its right is 0.84 7. Find the Z-scores that bound the middle 50% of the area under the standard normal curve. 8. A normal population has mean of 20 and standard deviation of 4. What proportion of the population is less than 18

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