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The probability distribution for X, the number of homes with a dust mite level that exceeds...

The probability distribution for X, the number of homes with a dust mite level that exceeds 2μg/g, based on a study by the National Institute of Environmental Health Sciences, is shown in the following table:

X 0 1 2 3 4
P(X=x) 0.04 0.35 0.37 0.2 0.04


What is the average number of homes with a dust mite level that exceeds 2μg/g?

Select one:

a. 1.5

b. 1

c. 1.85

d. 2

Math   Statistics-And-Probability   
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