question archive Let's Analyze Directions: Solve the following problem below
Subject:MathPrice: Bought3
Let's Analyze Directions: Solve the following problem below. 1.
At a large publishing company, the mean age of proof readers is 36.2 years, and the standard deviation is 3.7 years. Assume the variable is normally distributed. a. If the proof reader from the company is randomly selected, find the probability that his or her age will be between 36 and 37.5 years. * a.12.67% b.14.67% c.11.67% d.15.67% None of the Above b. If a random sample of 15 proof readers is selected, find the probability that the mean age of the proof readers in the sample will be between 36 and 37.5 years. * a.4.47% b.49.75% c.49.47% d.15.67% None of the Above 2. The average cholesterol content of a certain brand of eggs is 215 milligrams, and the standard deviation is 15 milligrams. Assume the variable is normally distributed. a. If a single egg is selected, find the probability that the mean of the sample will be greater than 220 milligrams. * a.37.07% b.37.70% c.35.07% d.35.70% None of the Above b. If a sample of 25 eggs is selected, find the probability that the mean of the sample will be larger 220 milligrams. * a.4.50% b.4.25% c.4.00% d.4.75% None of the Above