EBK STATISTICS FOR BUSINESS & ECONOMICS
12th Edition
ISBN: 8220100460463
Author: Anderson
Publisher: CENGAGE L
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Chapter 1, Problem 18SE
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 return is 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 return 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?
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A Bloomberg Businessweek North American subscriber study collected data from a sample of 2861 sub-scribers. Fifty- nine percent of the respondents indicated an annual income of $ 75,000 or more, and 50% reported having an American Express credit card.
a. What is the population of interest in this study?
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c. Is ownership of an American Express card a categorical or quantitative variable?
d. Does this study involve cross- sectional or time series data?
e. Describe any statistical inferences Bloomberg Businessweek might make on the basis of the survey.
The government sample survey of 60,000 households each month that produces data on employment, earnings, and many other variables is called the
A.
General Household Survey.
B.
Gallup Poll.
C.
Labor Statistics Survey.
D.
General Social Survey.
E.
Current Population Survey.
The North American Free Trade Agreement (NAFTA) enacted in 1994 is a trilateral trade agreement signed
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and Americans remain split on the issue. In a Gallup Poll conducted February 1-5, 2017, 448 out of 973
randomly selected Americans aged 18 or older stated that they believed that NAFTA was bad for the United
States.
a. Find the point estimate for the proportion of Americans who believe that NAFTA was bad for the
United States. Round your answer to 4 decimal places.
b. Find the margin of error for a 95% confidence interval. Round your answer to 4 decimal places.
c. Construct the 95% confidence interval for the proportion of Americans who believe that NAFTA was
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decimal places.
d. Can you conclude that more than half of Americans believe that NAFTA was bad for the United
States?
No, the…
Chapter 1 Solutions
EBK STATISTICS FOR BUSINESS & ECONOMICS
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