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Chapter 5: Q T5.3. (page 336)

Choose an American household at random and record the number of vehicles they own. Here is the probability model if we ignore the few households that own more than 5 cars: A housing company builds houses with two-car garages. What percent of households have more cars than the

garage can hold? (a)7%(b)13%(c)20%(d)45%(e)55%

Short Answer

Expert verified

The percentage is 20%.

Step by step solution

01

Step 1. Given

The table is:

02

Step 2. Concept 

The probability of an event=numberoffavourableoutcomestotalnumberofoutcomes

03

Step 3. Calculation

The percentage of houses with cards that could be held by the garage is calculated as follows:

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

As a result, the needed percentage is 20%

As a result, the best solution is (c).

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