The percent of fat calories that a person in America consumes each day is normally distributed with a mean of about 36 and a standard deviation of 10. Suppose that one individual is randomly chosen. Let X=X= percent of fat calories. (a) Find the z-score corresponding to 41 percent of fat calories, rounded to 3 decimal places.    (b) Find the probability that the percent of fat calories a person consumes is more than 41.    (c) Shade the area corresponding to this probability in the graph below. (Hint: The x-axis is the z-score. Use your z-score from part (a), rounded to one decimal place).

A First Course in Probability (10th Edition)
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ISBN:9780134753119
Author:Sheldon Ross
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The percent of fat calories that a person in America consumes each day is normally distributed with a mean of about 36 and a standard deviation of 10. Suppose that one individual is randomly chosen. Let X=X= percent of fat calories.

(a) Find the z-score corresponding to 41 percent of fat calories, rounded to 3 decimal places.   

(b) Find the probability that the percent of fat calories a person consumes is more than 41.   

(c) Shade the area corresponding to this probability in the graph below. (Hint: The x-axis is the z-score. Use your z-score from part (a), rounded to one decimal place).


(d) Find the maximum number for the lower quarter of percent of fat calories. Round your answer to 3 decimal places.   

(e) Sketch the graph and write the probability statement.

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