Problem 7.30
On February 8, 2002, the Gallup Organization released the resultsof a poll concerning American attitudes toward the 19th WinterOlympic Games in Salt Lake City, Utah. The poll results were basedon telephone interviews with a randomly selected national sample of1,011 adults, 18 years and older, conducted February 4-6, 2002.
a. Suppose we wish to use the pollâs results to justify the claimthat more than 30 percent of Americans (18 years or older) say thatfigure skating is their favorite Winter Olympic event. The pollactually found that 32 percent of respondents reported that figureskating was their favorite event. If, for the sake of argument, weassume that 30 percent of Americans (18 years or older) say figureskating is their favorite event (that is, p = .3), calculate theprobability of observing a sample proportion of .32 or more: thatis P(p> or – .32).
b. Based on the probability you computed in part a, would youconclude that more than 30 percent of Americans (18 years or older)say that figure skating is their favorite Winter Olympic event?
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