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The weights of teenagers living in Jacksonville is normally distributed, with a mean of 155 lbs and a standard deviation of 12.2 lbs. a. what

The weights of teenagers living in Jacksonville is normally distributed, with a mean of 155 lbs and a standard deviation of 12.2 lbs.

a. what are the minimum and maximum weighs separation the most inner 78% (middle 78% of teenager population?

b. what is the weight that separates the top 15% from the rest of the weight's distribution?

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