Question: 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

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 grade is required in order to be in the top 30 percent?

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 people received a grade between 89 and 95?

C. 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 grade is required in order to be in the top 22 percent?

D. 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 people received a grade of 94 or less?

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