A project conducted by the Metropolis Municipal Office of Road Safety asked peop
ID: 3369529 • Letter: A
Question
A project conducted by the Metropolis Municipal Office of Road Safety asked people many questions about their cars. One question was the reason that a person chooses a given car, and that data is in following table:
Table: Reason for Choosing a Car
Safety
Reliability
Cost
Performance
Comfort
Looks
84
62
46
34
47
27
a. Find the probability that a single randomly-selected respondent chooses a car for safety:
Enter probability as a fraction or as a decimal rounded to nearest thousandth (three places). Examples of correctly entered responses:
3/5 5/11 0.300 0.650 0.971
b. Find the probability that a single randomly-selected respondent chooses a car for cost:
Enter probability as a fraction or as a decimal rounded to nearest thousandth (three places). Examples of correctly entered responses:
3/5 5/11 0.300 0.650 0.971
c. Find the probability that a single randomly-selected respondent chooses a car for comfort:
Enter probability as a fraction or as a decimal rounded to nearest thousandth (three places). Examples of correctly entered responses:
3/5 5/11 0.300 0.650 0.971
d. Find the probability that a single randomly-selected respondent chooses a car for reliability:
Enter probability as a fraction or as a decimal rounded to nearest thousandth (three places). Examples of correctly entered responses:
3/5 5/11 0.300 0.650 0.971
Safety
Reliability
Cost
Performance
Comfort
Looks
84
62
46
34
47
27
Explanation / Answer
Total respondents 84 + 62 +46 +34 +47 +27 = 300
a) The probability that a single randomly-selected respondent chooses a car for safety is
84 / 300 = 0.280
b) The probability that a single randomly-selected respondent chooses a car for cost: is
46 / 300 = 0.153
c) The probability that a single randomly-selected respondent chooses a car for comfort: is 47/300 = 0.157
d) The probability that a single randomly-selected respondent chooses a car for reliability is 62/300= 0.207
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