Which of the following statements involve inferential statistics as opposed to descriptive statistics?
a. A total of 4,785 people voted for Mike Johnson in a local election.
b. The FAA reported there were 200 near misses among airplanes last year.
c. A class of fifty statistics students earned an average grade of 75.5.
d. The city business office reported 40 building permits for new single-family housing units.
e. Based on a sample of 500 subscribers, a local cable system estimates that forty percent of its subscribers watch a premium channel at least once per day.
Question 2
Which of the following statements involve descriptive statistics as opposed to inferential statistics?
a. The Alcohol, Tobacco and Firearms Department reported that Houston had 1,791 registered gun dealers in 1997.
b. Based on a survey of 400 magazine readers, the magazine reports that 45 of its readers prefer double column articles.
c. The FAA samples 500 traffic controllers in order to estimate the percent retiring due to job stress related illness.
d. Based on a sample of 300 professional tennis players, a tennis magazine reported that 25 of the parents of all professional tennis players did not play tennis.
e. The admission's office in a southern university samples 200 college students in business in order to estimate the percentage of business majors who prefer accounting to economics.
Mutualisms, such as those that occur among plants and pollinators, generally involve large numbers o
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