4. A study by Bechtel et al., 2009, described in the Archives of Environmental & Occupational Healthconsidered polycyclic aromatic hydrocarbons and immune system function in beef cattle. Some cattlewere near major oil- and gas-producing areas of western Canada. The mean monthly exposure toPM1.0 (particulate matter that is < 1µm in diameter) was approximately 7.1 ug/m3 with standarddeviation 1.3. Assume that the monthly exposure is normally distributed. NOTE: Draw the standardnormal curve for each item below.a. What is the probability of a monthly exposure between 4 and 6 ug/m?b. What is the probability of a monthly exposure thatis at least 7.3 ug/m³c. What is the probability of a monthly exposure that is less than 6.9 µg/m

Here given Mean = 7.1 Standard deviation = 1.3 Here use standard Normal distribution table for…

Answered: a. What is the probability of a monthly…

A First Course in Probability (10th Edition)

10th Edition

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Author:Sheldon Ross

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Chapter1: Combinatorial Analysis

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a. What is the probability of a monthly exposure between 4 and 6 ug/m? b. What is the probability of a monthly exposure thatis at least 7.3 ug/m3 c. What is the probability of a monthly exposure that is less than 6.9 ug/m