A random sample of Ohio voters was asked about the number of cars or trucks they
ID: 2948703 • Letter: A
Question
A random sample of Ohio voters was asked about the number of cars or trucks they own (one, two, or at least three) and the type of community in which they live (rural, suburban, urban). The two-way table follows.
Community Type
Number of cars
Rural
Suburban
Urban
Total
One
120
230
530
880
Two
470
620
390
1480
At least three
355
420
85
840
Total
925
1270
1005
3200
A random sample of Ohio voters was asked about the number of cars or trucks they own (one, two, or at least three) and the type of community in which they live (rural, suburban, urban). The two-way table follows.
Community Type
Number of cars
Rural
Suburban
Urban
Total
One
120
230
530
880
Two
470
620
390
1480
At least three
355
420
85
840
Total
925
1270
1005
3200
If community type and number of cars are independent, approximately how many urban residents would you expect to own at least three cars or trucks? 85. 58. 335. 264.
Explanation / Answer
Number of urban residents expected to own at least three cars or trucks
= (Row total * Column total) / (Grand total)
= (840 * 1005)/3200
= 263.8
= 264
Option D is correct.
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