A project conducted by the Metropolis Municipal Office of Road Safety asked peop
ID: 3369531 • 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
Explanation / Answer
total frequency=84+62+46+34+47+27=300
a) probability that a single randomly-selected respondent chooses a car for safety=84/300=0.280
b) probability that a single randomly-selected respondent chooses a car for cost=46/300=0.153
c) probability that a single randomly-selected respondent chooses a car for comfort=47/300=0.157
d) probability that a single randomly-selected respondent chooses a car for reliability=62/300=0.207
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