2.99
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The topic of global warming increasingly appears in the news. It has the potential to impact companies’ operations through changes in governmental regulations, new reporting requirements, necessary operational changes, and so on. The Institute of Management Accountants (IMA) conducted a survey of senior finance professionals to gauge members’ thoughts on global warming and its impact on their companies. The survey found that 65% of senior finance professionals believe that global warming is having a significant impact on the environment.

Source: Data extracted from “Global Warming: How Has It Affected Your Company?” bit.ly/2pd341h.

Suppose that you select a sample of 100 senior finance professionals.

a. What is the probability that the sample percentage indicating global warming is having a significant impact on the environment will be between 64% and 69%?

b. The probability is 90% that the sample percentage will be contained within what symmetrical limits of the population percentage?

c. The probability is 95% that the sample percentage will be contained within what symmetrical limits of the population percentage?

d. Suppose you selected a sample of 400 senior finance professionals.

How does this change your answers in (a) through (c)?

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** >** Why does the standard error of the mean decrease as the sample size, n, increases?

** >** Compare and contrast the bar chart for categorical data with the histogram for numerical data.

** >** What are the advantages and disadvantages of using a bar chart, a pie chart, a doughnut chart, and a Pareto chart?

** >** Why would you construct a summary table?

** >** How do histograms and polygons differ in construction and use?

** >** Figures 2.5 and 2.6 show a bar chart and a pie chart for the risk level for the retirement fund data (see pages 55–56). a. Create an exploded pie chart, a doughnut chart, a cone chart, and a pyramid chart that show the risk level of retirement funds. b.

** >** Figure 2.4 shows a bar chart and a pie chart for what devices millennials used to watch movies/TV shows (see page 54). a. Create an exploded pie chart, a cone chart, or a pyramid chart that shows how people paid for purchases and other transactions. b. W

** >** For each of the following variables, determine whether the variable is categorical or numerical and determine its measurement scale. If the variable is numerical, determine whether the variable is discrete or continuous. a. Number of cellphones in the h

** >** Examine the following visualization, adapted from a management consulting white paper. a. Describe at least one good feature of this visual display. b. Describe at least one bad feature of this visual display. c. Redraw the graph, by using the Exhibit

** >** Examine the visualization on page 81, adapted from one that appeared in the post â€œWho Are the Comic Book Fans on Facebook?â€ on February 2, 2013, as reported by graphicspolicy.com. a. Describe at least one good feature

** >** Examine the following visualization, adapted from one that appeared in a post in a digital marketing blog. a. Describe at least one good feature of this visual display. b. Describe at least one bad feature of this visual display. c. Redraw the graph, u

** >** Why is the sample mean an unbiased estimator of the population mean?

** >** The time it takes to download a video from the Internet is measured. a. Explain why the download time is a continuous numerical variable. b. Explain why the download time is a ratio-scaled variable.

** >** U.S. businesses are listed by size: small, medium, and large. Explain why business size is an example of an ordinal-scaled variable.

** >** The file Natural Gas includes the monthly average commercial price for natural gas (dollars per thousand cubic feet) in the United States from January 1, 2008, to December 2016. Source: Data extracted from “U.S. Natural Gas Prices,” bit.ly/2oZIQ5Z, March

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** >** In the sample of 479 retirement funds ( Retirement Funds ), what characteristics are associated with the funds that have the lowest five-year return?

** >** Using the sample of retirement funds stored in Retirement Funds: a. Construct one chart that visualizes 10YrReturn and 1YrReturn by Market Cap. b. Construct one chart that visualizes 5YrReturn and 1YrReturn by Market Cap. c. How does the patterns to t

** >** In the sample of 479 retirement funds ( Retirement Funds ), which funds in the sample have the lowest five-year return?

** >** Using the sample of retirement funds stored in Retirement Funds: a. Construct a chart that visualizes SD and Assets by Risk Level. b. Construct a chart that visualizes SD and Assets by Fund Type. Rescale the Assets axis, if necessary, to see more detai

** >** In the sample of 479 retirement funds ( Retirement Funds ), what are the attributes of the fund with the highest five-year return?

** >** Using the sample of retirement funds stored in Retirement Funds: a. Construct a table that tallies type, market cap, risk, and rating. b. What conclusions can you reach concerning differences among the types of funds based on market cap categories, ris

** >** An IAB study on the state of original digital video showed that original data video is becoming increasingly popular. Original digital video is defined as professionally produced video only for ad-supported online distribution and viewing (not TV). Accor

** >** Using the sample of retirement funds stored in Retirement Funds: a. Construct a table that tallies Fund Type, Risk Level and Star Rating. b. What conclusions can you reach concerning differences among the types of retirement funds, based on the risk le

** >** Using the sample of retirement funds stored in Retirement Funds: a. Construct a table that tallies, Market Cap, Risk Level, and Star Rating. b. What conclusions can you reach concerning differences among the funds based on Market Cap (small, mid-cap, and

** >** Using the sample of retirement funds stored in Retirement Funds: a. Construct a table that tallies Fund Type, Market Cap, and Star Rating. b. What conclusions can you reach concerning differences among the types of retirement funds (growth and value), ba

** >** The Super Bowl is a big viewing event watched by close to 200 million Americans that is also a big event for advertisers. The file SuperBowlAds contains the number of ads that ran between the opening kickoff and the final whistle and the total elapsed ru

** >** The file Movie Attendance16 contains the yearly movie attendance (in billions) from 2001 through 2016. a. Construct a time-series plot for the movie attendance (in billions). b. What pattern, if any, is present in the data?

** >** The file NewHomeSales contains the number of new homes sold (in thousands) and the median sales price of new single-family houses sold in the United States recorded at the end of each month from January 2000 through December 2016. Source: Data extracted

** >** How have stocks performed in the past? The following table presents the data stored in Stock Performance and shows the performance of a broad measure of stocks (by percentage) for each decade from the 1830s through the 2000s: a. Construct a time-series

** >** A Pew Research Center survey found a noticeable rise in smartphone ownership and Internet usage in emerging and developing nations. Once online, adults in these nations are hungry for social interaction. The file GlobalIntenetUsage contains the level of

** >** The file MobileSpeed contains the overall download and upload speeds in mbps for nine carriers in the United States. Source: Data extracted from “Best Mobile Network 2016”, bit.ly/1KGPrMm, accessed November 10, 2016. a. Do you think that carriers with

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** >** The following is a series of annual sales (in $millions) over an 11-year period (2007 to 2017): Year: 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 Sales: 13.0 17.0 19.0 20.0 20.5 20.5 20.5 20.0 19.0 17.0 13.0 a. Construct a time-series plot. b.

** >** The following is a set of data from a sample of n = 11 items: X: 7 5 8 3 6 0 2 4 9 5 8 Y: 1 5 4 9 8 0 6 2 7 5 4 a. Construct a scatter plot. b. Is there a relationship between X and Y? Explain.

** >** The data stored in Drink represents the amount of soft drink in a sample of fifty 2-liter bottles. a. Construct a histogram and a percentage polygon. b. Construct a cumulative percentage polygon. c. On the basis of the results in (a) and (b), does the am

** >** The file Bulbs contains the life (in hours) of a sample of forty 6-watt light emitting diode (LED) light bulbs produced by Manufacturer A and a sample of forty 6-watt light emitting diode (LED) light bulbs produced by Manufacturer B. Use the following c

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** >** Call centers today play an important role in managing dayto- day business communications with customers. Call centers must be monitored with a comprehensive set of metrics so that businesses can better understand the overall performance of those centers.

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** >** How do the average credit scores of people living in various cities differ? The file Credit Scores contains an ordered array of the average credit scores of 2,570 American cities. Source: Data extracted from “Study shows cities with highest and lowest cr

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** >** The following histogram and cumulative percentage polygon visualize the data about the property taxes on a $176K home for the 50 states and the District of Columbia, stored in Property Taxes . What conclusions can you reach concerning the property tax

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** >** The file MobileSpeed contains the overall download and upload speeds in mbps for nine carriers in the United States. Source: Data extracted from “Best Mobile Network 2016”, bit.ly/1KGPrMm, accessed November 10, 2016. a. Construct an ordered array. b. C

** >** The file NBACost contains the total cost (in $) for four tickets purchased on the secondary market, two beers, two soft drinks, four hot dogs, and one parking space at each of the 30 National Basketball Association arenas during a recent season. Source:

** >** The following is a stem-and-leaf display representing the amount of gasoline purchased, in gallons (with leaves in tenths of gallons), for a sample of 25 cars that use a particular service station on the New Jersey Turnpike: a. Construct an ordered arr

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** >** Construct a stem-and-leaf display, given the following data from a sample of midterm exam scores in finance:

** >** Do social recommendations increase ad effectiveness? A study of online video viewers compared viewers who arrived at an advertising video for a particular brand by following a social media recommendation link to viewers who arrived at the same video by w

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** >** A survey of 1,520 American adults asked â€œDo you feel overloaded with too much information?â€ The results indicate that 23% of females feel information overload compared to 17% of males. The results are: a. Construct a

** >** The goal of corporate sustainability is to manage the environmental, economic, and social effects of a corporation’s operations so it is profitable over the long-term while acting in a responsible manner to society. An international study by Unilever rev

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** >** The following table indicates the percentage of residential electricity consumption in the United States, in a recent year organized by type of use. a. Construct a bar chart, a pie chart, and a Pareto chart. b. Which graphical method do you think is be

** >** The Consumer Financial Protection Bureau reports on consumer financial product and service complaint submissions by state, category, and company. The following table, stored in Financial Complaints1 , represents complaints received from Louisiana consume

** >** The Energy Information Administration reported the following sources of electricity in the United States in 2016: a. Construct a Pareto chart. b. What percentage of power is derived from coal, nuclear power, or natural gas? c. Construct a pie chart. d.

** >** How do college students spend their day? The 2016 American Time Use Survey for college students found the following results: a. Construct a bar chart, a pie or doughnut chart, and a Pareto chart. b. Which graphical method do you think is best for portr

** >** A survey of online shoppers revealed that in 2015 they bought more of their purchases online than in stores. The data in Online Shopping reveals how their purchases were made. a. Construct a bar chart, a pie or doughnut chart, and a Pareto chart. b. Whic

** >** The file Drink contains the following data for the amount of soft drink (in liters) in a sample of fifty 2-liter bottles: 2.109 2.086 2.066 2.075 2.065 2.057 2.052 2.044 2.036 2.038 2.031 2.029 2.025 2.029 2.023 2.020 2.015 2.014 2.013 2.014 2.012 2.012

** >** The file Bulbs contains the life (in hours) of a sample of forty 6-watt light emitting diode (LED) light bulbs produced by Manufacturer A and a sample of forty 6-watt light emitting diode (LED) light bulbs produced by Manufacturer B. a. Construct a frequ

** >** The financial services call center in Problem 2.20 also monitors call duration, the amount of time spent speaking to customers on the phone. The file CallDuration contains the following data for time, in seconds, spent by agents talking to 50 customers:

** >** Call centers today play an important role in managing dayto- day business communications with customers. Call centers must be monitored with a comprehensive set of metrics so that businesses can better understand the overall performance of those centers.

** >** What do millennials around the world want in a job? A Deloitte survey of millennials on work-life challenges found that millennials are looking for stability in an uncertain world, with 65% of millennials preferring a permanent, full-time job rather than

** >** One operation of a mill is to cut pieces of steel into parts that will later be used as the frame for front seats in an automobile. The steel is cut with a diamond saw and requires the resulting parts to be within {0.005 inch of the length specified by t

** >** How do the average credit scores of people living in different American cities differ? The data in Credit Scores is an ordered array of the average credit scores of 2,570 American cities. Source: Data extracted from www.bizjournals.com/sanantonionews/20

** >** How much time do commuters living in or near cities spend commuting to work each week? The file Commuting Time contains the average weekly commuting time in 30 U.S. cities. Source: Data extracted from Office of the New York City Comptroller, “NYC Econom

** >** The file Utility contains the following data about the cost of electricity (in $) during July 2017 for a random sample of 50 one-bedroom apartments in a large city. 96 171 202 178 147 102 153 197 127 82 157 185 90 116 172 111 148 213 130 165 141 149 206

** >** The file NBACost contains the total cost ($) for four tickets purchased on the secondary market, two beers, two soft drinks, two hot dogs, and one parking space at each of the 30 National Basketball Association arenas during a recent season. These costs

** >** Data was collected on salaries of compliance specialists in corporate accounting firms. The salaries ranged from $61,000 to $261,000. a. If these salaries were grouped into six class intervals, indicate the class boundaries. b. What class interval width

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** >** Construct an ordered array, given the following data from a sample of midterm exam scores in marketing: 88 78 78 73 91 78 85

** >** Construct an ordered array, given the following data from a sample of n = 7 midterm exam scores in accounting: 68 94 63 75 71 88 64

** >** Do social recommendations increase ad effectiveness? A study of online video viewers compared viewers who arrived at an advertising video for a particular brand by following a social media recommendation link to viewers who arrived at the same video by w

** >** You plan to conduct a marketing experiment in which students are to taste one of two different brands of soft drink. Their task is to correctly identify the brand tasted. You select a random sample of 200 students and assume that the students have no abi

** >** A study of selected Kickstarter projects showed that overall a majority were successful, achieving their goal and raising, at a minimum, the targeted amounts. In an effort to identify project types that influence success, selected projects were subdivide

** >** A survey of 1,520 Americans adults asked â€œDo you feel Overloaded with too much information?â€ The results indicate that 23% of females feel information overload compared to 17% of males. The results are: a. Construct

** >** Timetricâ€™s 2016 survey of insurance professionals explores the use of technology in the industry. The file Technologies contains the responses to the question that asked what technologies these professionals expected to be most used by

** >** This table represents the summer power-generating capacity by energy source in the United States as of July 2016. What conclusions can you reach about the source of energy in July 2016?

** >** In addition to the impact of Big Data, what disruptive technology capability do executives anticipate will have the greatest impact on their firm over the next decade? A survey of 50 Fortune 1000 executives revealed the following: What conclusions can

** >** The Consumer Financial Protection Bureau reports on consumer financial product and service complaint submissions by state, category, and company. The following table, stored in FinancialComplaints1 , represents complaints received from Louisiana consumer

** >** The following table, stored in Smartphone Sales , represents the annual market share of smartphones, by type, for the years 2011, 2012, 2013, 2014, and 2015. Source: Data extracted from www.gartner.com/newsroom/id/3215217. a. What conclusions can you r