Identify the parameter. For each of the following situations, state whether the parameter of interest is a mean or a proportion. It may be helpful to examine whether individual responses are numerical or categorical.
(a) In a survey, one hundred college students are asked how many hours per week they spend on the Internet.
(b) In a survey, one hundred college students are asked: “What percentage of the time you spend on the Internet is part of your course work?”
(c) In a survey, one hundred college students are asked whether or not they cited information from Wikipedia in their papers.
(d) In a survey, one hundred college students are asked what percentage of their total weekly spending is on alcoholic beverages.
(e) In a sample of one hundred recent college graduates, it is found that 85 percent expect to get a job within one year of their graduation date.
Identify the parameter. For each of the following situations, state whether the parameter of interest is a mean or a proportion.
(a) A poll shows that 64% of Americans personally worry a great deal about federal spending and the budget deficit.
(b) A survey reports that local TV news has shown a 17% increase in revenue within a two year period while newspaper revenues decreased by 6.4% during this time period.
(c) In a survey, high school and college students are asked whether or not they use geolocation services on their smart phones.
(d) In a survey, smart phone users are asked whether or not they use a web-based taxi service.
(e) In a survey, smart phone users are asked how many times they used a web-based taxi service over the last year.
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