Question 1
Of the 192 classes I attended last semester, the professor was late 11 times. Which question most probably represents the purpose of the study?
◦ How many classes will not start on time during a full school year?
◦ What percent of classes will not start on time?
◦ What percent of professors are late to class?
◦ For what percent of classes is a professor tardy?
Question 2
Which data provide the answer to the question: "What percent of illegal drug use begins with tobacco smoking?"
◦ Eleven of a group of 78 smokers said they used illegal drugs.
◦ Twenty-eight of 62 clients of a drug rehab center reported that they smoked cigarettes while using illegal drugs.
◦ Sixty-seven of a group of 78 drug users said they smoked.
◦ Twenty-eight of 62 clients of a drug rehab center reported that they smoked cigarettes before using illegal drugs.
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