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Question 2 [8 points] The distribution of a professor's exam scores is normally distributed with a mean of 60 points and a standard deviation of 15 points. The professor promises his students that the top 20% of the scores will receive a grade of A in his class. (a) What is the minimum score you must achieve to receive an A in the class? (b) Sketch the graph and shade the concerned region.

          Question 2 [8 points]
The distribution of a professor's exam scores is normally distributed with a mean of 60 points and
a standard deviation of 15 points. The professor promises his students that the top 20% of the
scores will receive a grade of A in his class.
(a) What is the minimum score you must achieve to receive an A in the class?
(b) Sketch the graph and shade the concerned region.

Question 2 [8 points]
The distribution of a professor's exam scores is normally distributed with a mean of 60 points and
a standard deviation of 15 points. The professor promises his students that the top 20% of the
scores will receive a grade of A in his class.
(a) What is the minimum score you must achieve to receive an A in the class?
(b) Sketch the graph and shade the concerned region.

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Elementary Statistics a Step by Step Approach

Allan G. Bluman 9th Edition

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Please do this by R and show the code Question 2[8 points] The distribution of a professor's exam scores is normally distributed with a mean of 60 points and a standard deviation of 15 points. The professor promises his students that the top 20% of the scores will receive a grade of A in his class. (a) What is the minimum score you must achieve to receive an A in the class? (b) Sketch the graph and shade the concerned region.