The EPA requires that the exhaust of each model of motor vehicle be tested for the level of several pollutants. The level of oxides of nitrogen (NOX) in the exhaust of one light truck model was found to vary among individual trucks according to an approximately Normal distribution with mean $mu$ = 1.45 grams per mile driven and standard deviation σ = 0.40 gram per mile. Which of the following best estimates the proportion of light trucks of this model with NOX levels greater than 2 grams per mile?

AGRICULTURAL STATISTICS AND ECONOMICS

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Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]

The EPA requires that the exhaust of each model of motor vehicle be tested for the level of several pollutants. The level of oxides of nitrogen (NOX) in the exhaust of one light truck model was found to vary among individual trucks according to an approximately Normal distribution with mean

A	0.0228
B	0.0846
C	0.4256
D	0.9154
E	0.9772

Explanation:

Detailed explanation-1: -Therefore, the z-score is: z = 0.3853 Now we can plug in the values we have: x = z * + x = 0.3853 * 0.40 + 1.45 x = 1.6041 Rounded to four decimal places, the 35th percentile for NOX exhaust is 1.6041 grams per mile driven.

There is 1 question to complete.

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AGRICULTURAL STATISTICS AND ECONOMICS