**Ages of Proofreaders**At a large publishing company, the mean age of proofreaders is 36.2 years and the standard deviation is 3.7 years. Assume the variable is normally distributed. Round intermediate Z-value calculations to two decimal places and the final answers to at least four decimal places.**Question Part:**If a proofreader from the company is randomly selected, find the probability that his or her age will be between 36 and 37.5 years.\[ P(36 < X < 37.5) = \square \]There are no graphs or diagrams in the image.

Given Data Population Mean,μ = 36.2 Population Standard Deviation,σ = 3.7

Answered: Ages of Proofreaders At a large…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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A standardized exam's scores are normally distributed. In a recent year, the mean test score was 20.6 and the standard deviation was 5.6. The test scores of four students selected at random are 13, 23, 7, and 35. Find the z-scores that correspond to each value and determine whether any of the values are unusual. Question content area bottom Part 1 The z-score for 13 is (Round to two decimal places as needed.) Part 2 The z-score for 23 is (Round to two decimal places as needed.) Part 3 The z-score for 7 is (Round to two decimal places as needed.) Part 4 The z-score for 35 is (Round to two decimal places as needed.) Part 5 Which values, if any, are unusual? Select the correct choice below and, if necessary, fill in the answer box within your choice. A. The unusual value(s) is/are (Use a comma to separate answers as needed.) B. None of the values are unusual.
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Mm5
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Page > of 3 The Environmental Protection Agency (EPA) fuel economy estimates for automobile models tested recently predicted a mean of 27.8 miles per gallon, with a standard deviation of 4.2 miles per gallon. Assume that a Normal model applies. Find the probability that a randomly selected automobile will average: 1. Less than 24 miles per gallon. 2. More than 19 miles per gallon. 3. Between 24 and 30 miles per gallon. 45°F Cloudy here to search (25
Sample size = 16 Standard deviation = 12 %3D %3D Mean = 90 Find the probability that the sample mean is between 88 and 94.

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