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Chapter 6: Q.27 (page 356)

A housing company builds houses with two-car garages. What percent of households have more cars than the garage can hold? (a) 13%

(b) 20%

(c) 45%

(d) 55%

(e) 80%

Short Answer

Expert verified

The percent of households have more cars than the garage can hold is option (b)20%.

Step by step solution

01

Given Information

The probability model if we ignore the few households that own more than 5 cars.

02

Explanation

We must calculate the percentage of homes with more cars than the (two-car) garage can accommodate, which equals toX>2

Add the corresponding probabilities:

localid="1649915803257" P(X>2)=P(X=3)+P(X=4)+P(X=5)=0.13+0.05+0.02=0.20=20%

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