Question 1
If 68% of the persons in a 100-person sample say that they approve of the actions of the city council with a margin of error of 5%, one can conclude that the number of persons in a population of 2500 that approve of council policies is
◦ probably in the interval 1575 to 1825.
◦ 250.
◦ 1700.
◦ probably in the interval 1600 to 1800.
Question 2
Of 54 college students interviewed, 36 said they were skeptical of statistical studies. The student conducting the study for the campus paper reported that between 15,000 and 17,000 of the 24,000 students on campus were skeptical of statistical studies. Which of the following is an acceptable alternative to the original report?
◦ "Between 63% and 71% of students at the university are skeptical of statistical studies."
◦ "A total of 16,000 students on this campus are skeptical of statistical studies."
◦ "If you are confident in the results of statistical studies, then the person on your left and the person on your right in every class are skeptical of the results of statistical studies."
◦ "Two of every three students on campus are skeptical of statistic studies."
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