Question: 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,

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 z-score is required to be in the top 40%?

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