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The Bureau of Transportation Statistics Omnibus Household Survey is conducted annually and serves as an information source for the U.S. Department of Transportation. In one part of the survey the person being interviewed was asked to respond to the following statement: "Drivers of motor vehicles should be allowed to talk on a hand-held cell phone while driving." Possible responses were strongly agree, somewhat agree, somewhat disagree, and strongly disagree. Forty-four respondents said that they strongly agree with this statement,130 said that they somewhat agree, 165 said they somewhat disagree, and 741 said they strongly disagree with this statement (Bureau of Transportation website, August 2010$)$ . a. Do the responses for this statement provide categorical or quantitative data? b. Would it make more sense to use averages or percentages as a summary of the responses for this statement? c. What percentage of respondents strongly agree with allowing drivers of motor vehicles to talk on a hand-held cell phone while driving? d. Do the results indicate general support for against allowing drivers of motor vehicles to talk on a hand-held cell phone while driving?
Figure 1.11 provides a bar chart showing the amount of federal spending for the years 2004 to 2010 (Congressional Budget Office website, May $15,2011 ) .$ a. What is the variable of interest? b. Are the data categorical or quantitative? c. Are the data time series or cross-sectional? d. Comment on the trend in federal spending over time.
The Ritz-Carlton Hotel used a customer opinion questionnaire to obtain performance data about its dining and entertainment services (The Ritz-Carlton Hotel, Naples, Florida, February 2006 ). Customers were asked to rate six factors: Welcome, Service, Food, Menu Appeal, Atmosphere, and Overall Experience. Data were recorded for each factor, with I for Fair, 2 for Average, 3 for Good, and 4 for Excellent. a. The customer responses provided data for six variables. Are the variables categonical or quantitative? b. What measurement scale is used?
Consider the data set in Table $1.7 .$ a. Compute the average endowment for the sample. b. Compute the average percentage of applicants admitted. c. What percentage of the schools have NCAA Division III varsity teams? d. What percentage of the schools have a City: Midsiue campus setting?
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