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A) The results from a statistics class' first exam are as follows: The average grade obtained on the exam by its 45 students is an 85, with a standard deviation of 15 points. Answer the following based on this information:

What percentage of individuals have a z-score between -1 and 1.40?

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B) The results from a statistics class' first exam are as follows: The average grade obtained on the exam by its 45 students is an 85, with a standard deviation of 15 points. Answer the following based on this information:

What percentage of individuals have a z-score between 1.05 and 1.40?

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Answered by adjastep on coursehero.com

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