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Missouri State University
Piedmont College
Cairn University
07:05
Mihir Nayar
Table 1.7 shows data for seven colleges and universities. The endowment fin billions of dollars) and the percentage of applicants admitted are shown $(U S A$ Today, February $3,$ $2008 ) .$ The state each school is located in, the campus setting, and the NCAA Division for varsity teams were obtained from the National Center of Education Statistics website, February $22,2008$ . a. How many elements are in the data set? b. How many variables are in the data set? c. Which of the variables are categorical and which are quantitative?
03:33
Bryan Luo
Refer to Table 1.6 . a. What is the average miles per gallon for city driving? b. On average, how much higher is the miles per gallon for highway driving as compared to city driving? c. What percentage of the cars have four-cylinder engines? d. What percentage of the cars use regular fuel?
08:35
A random telephone survey of 1021 adults (aged 18 and older) was conducted by Opinion Research Corporation on behalf of Completetax, an online tax preparation and e-filing service. The survey results showed that 684 of those surveyed planned to file their taxes electronically (CompleteTax Tax Prep Survey 2010 ). a. Develop a descriptive statistic that can be used to estimate the percentage of all taxpayers who file electronically. b. The survey reported that the most frequently used method for preparing the tax retumis to hire an accountant or professional tax preparer. If 60$\%$ of the people surveyed had their tax return prepared this way, how many people used an accountant or professional tax preparer? c. Other methods that the person filing the retum often used include manual preparation, use of an online tax service, and use of a software tax program. Would the data for the method for preparing the tax return be considered categorical or quantitative?
02:02
Katharine Saveliff
The Commerce Department reported receiving the following applications for the Malcolm Baldrige National Quality Award: 23 from large manufacturing firms, 18 from large service firms, and 30 from small businesses. a. Is type of business a categorical or quantitative variable? b. What percentage of the applications came from small businesses?
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Picturing Variations With Graphs
Numerical Summaries
Linear Regression and Correlation
Probability Topics
Normal, Binomial, and Geometric Models
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