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business statistics communicating
Business Statistics A First Course 8th Global Edition David M. Levine, Kathryn A. Szabat, David F. Stephan - Solutions
249.539 795.539 Goblet of Fire
261.988 878.988 Prisoner of Azkaban
317.558 976.458 Chamber of Secrets
Movie companies need to predict the gross receipts of individual movies once a movie has debuted. The following results, stored in PotterMovies , are the first weekend gross, the U.S. gross, and the worldwide gross (in $millions) of the eight Harry Potter movies:Title First Weekend($millions)U.S.
17.0 13.0a. Construct a time-series plot.b. Does there appear to be any change in annual sales over time?Explain.APPLYING THE CONCEPTS TEST SELF
20.0
20.5
20.0
17.0
The following is a series of annual sales (in $millions) over an 11-year period (2008 to 2018):Year: 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 Sales:
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 4a. 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 amount of soft drink filled in the bottles
The file ElectricConsME contains the electric power consumption data (kWh) of 44 randomly selected four-member households from Saudi Arabia and the United Arab Emirates.Use the following class interval widths for each distribution:Saudi Arabia: 10,000 but less than 20,000; 20,000 but less than
also monitors call duration, which is the amount of time spent speaking to customers on the phone. The file CallDuration contains the following data for the time, in seconds, spent by agents talking to 50 customers.243 290 199 240 125 151 158 66 350 1141 251 385 239 139 181 111 136 250 313 154 78
The financial services call center in Problem
Call centers today play an important role in managing day-to-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. One key metric for measuring overall call
inch shorter than the specified length. Data are collected from a sample of 100 steel parts and stored in Steel .a. Construct a percentage histogram.b. Is the steel mill doing a good job meeting the requirements set by the automobile company? Explain.
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 the automobile company.The measurement
How does the average annual precipitation differ around the world? The data in AnnualPrecipitation contains the average annual precipitation data in millimeters for 4,166 weather stations.Source: Data extracted from UN Data, available at https://bit.ly/2DWMYPz.a. Construct a percentage histogram.b.
How far do commuters in Australia travel for work? The file CommutingAustralia contains data about commuting time and distances of the 89 statistical regions of Australia.Source: Data extracted from Australian Bureau of Statistics, Census of Population and Housing: Commuting to Work, available at
Unemployment is one of the major issues most governments of the world are faced with. The following histogram shows the distribution of unemployment rates. The file EuUnempl2017 contains employment data for 319 European regions in 2017.What conclusions can you reach concerning the unemployment
Since its first season in 1950, the FIA Formula One World Championship has become one of the most popular championships of single-seater auto racing. The following percentage histogram visualizes the total cost (in $) of a ticket at each of the Grand Prix races. The file F1Prices2018 contains the
The file Utility contains the following data about the cost of electricity during July of a recent year 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 90 116 172 111 148 213 130 165 141 149 206 175 123 128 144 168 109 167 95 163 150
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. Construct a stem-and-leaf display.c. Does the
The FIFA World Cup was one of the biggest sporting events of 2018. The file WC2018TeamAge contains the average age of the players (years, in 2018) of the 32 teams that qualified for the event.Source: Data adapted from https://bit.ly/2zGSWRD.a. Construct a stem-and-leaf display.b. Around what value,
The following is a stem-and-leaf display representing the gallons of gasoline purchased (with leaves in tenths of gallons), for a sample of 25 cars that use a particular service station on the New Jersey Turnpike:9 147 10 02238 11 125566777 12 223489 13 02a. Construct an ordered array.b. Which of
Construct an ordered array, given the following stem-and-leaf display from a sample of n = 7 midterm exam scores in information systems:5 0 67 446 8 19 9 2 APPLYING THE CONCEPTS
Construct a stem-and-leaf display, given the following data from a sample of midterm exam scores in finance:54 69 98 93 53 74
Ipsos polled 1,004 adults asking them, “If purchasing a used car made certain upgrades or features more affordable, what would be your preferred luxury upgrade?” The summarized results show that 9% of males and 14% of females answered window tinting.Source: Ipsos, “Safety Technology Tops the
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 subdivided into project categories (Film & Video,
A survey of 1,520 American adults asked, “Do you feel overloaded with too much information?” The results indicate that 23%of females feel information overload compared to 17% of males.The results are:GENDER OVERLOADED Male Female Total Yes 134 170 304 No 651 565 1,216 Total 785 735 1,520
Timetric’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 expect to be most used by the insurance industry in the coming year.Technology Frequency
The following table indicates the percentage of residential electricity consumption in the United States, in a recent year organized by type of use.Type of Use Percentage Cooking 2%Cooling 15%Electronics 9%Heating 15%Lighting 13%Refrigeration 10%Water heating 10%Wet cleaning 3%Other 23%Source:
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 consumers by complaint category for 2016.Category
The Energy Information Administration reported the following sources of electricity in the United States in July 2017:Source MWh (000)Coal 127,959 Hydroelectric 21,455 Natural gas 114,270 Other gas 1,211 Nuclear 71,314 Petroleum coke and liquids 1,747 Renewable sources other than hydroelectric and
How do college students spend their day? The 2016 American Time Use Survey for college students found the following results:Activity Percentage Eating and Drinking 4%Educational Activities 14%Grooming 3%Leisure and Sports 17%Sleeping 37%Traveling 6%Working and Related Activities 10%Other 9%Source:
A survey of online shoppers revealed that in a recent year they bought more of their purchases online than in stores. The data in OnlineShopping reveals how their purchases were made.a. Construct a bar chart, a pie or doughnut chart, and a Pareto chart.b. Which graphical method do you think is best
1.894a. Construct a cumulative percentage distribution.b. On the basis of the results of (a), does the amount of soft drink filled in the bottles concentrate around specific values?
1.938
1.941
1.951
1.957
1.967
1.969
1.975
1.981
1.986
1.992
1.996
2.003
2.010
2.012
2.014
2.014
2.020
2.029
2.029
2.038
2.044
2.057
2.075
2.086
The file Drink contains the following data for the amount of soft drink (in liters) in a sample of fifty 2-liter bottles:
The file ElectricConsME contains the electric power consumption data (kWh) of 44 randomly selected four-member households from Saudi Arabia and the United Arab Emirates.a. Construct a frequency distribution and a percentage distribution for each country, using the following class interval widths
Cycling in cities is getting increasing popular, which has led to challenges in urban planning. According to the Copenhagenize index, Copenhagen, Denmark, was the most bicycle-friendly city in 2017. Assume a new intersection is under construction in your city. The file BikeTraffic contains bicycle
Call centers today play an important role in managing day-today 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. One key metric for measuring overall call
inch shorter than the specified length.a. Construct a frequency distribution and a percentage distribution.b. Construct a cumulative percentage distribution.c. Is the steel mill doing a good job meeting the requirements set by the automobile company? Explain.
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 the automobile company. Data are collected
How does the average annual precipitation differ around the world? The data in AnnualPrecipitation contains the average annual precipitation data in millimeters for 4,166 weather stations.Source: Data extracted from UN Data, available at http://data.un.org/Data.aspx?d=CLINO&f=ElementCode:06.a.
How far do commuters in Australia travel for work? The file CommutingAustralia contains data about commuting time and distances of the 89 statistical regions of Australia.Source: Data extracted from Australian Bureau of Statistics, available at https://bit.ly/2Qvtvfu.For the average commuting
The file Utility contains the following data about the cost of electricity (in $) during July 2018 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 90 116 172 111 148 213 130 165 141 149 206 175 123 128 144 168 109 167 95 163 150 154 130
29.74 Source: Data adapted from https://bit.ly/2zGSWRD.a. Organize these mean ages as an ordered array.b. Construct a frequency distribution and a percentage distribution for these mean ages.c. Around which class grouping, if any, are these mean ages concentrated?Explain.TEST SELF
28.35
28.09
27.09
29.52
28.52
27.83
27.09
29.17
28.43
27.78
27.09
28.96
28.43
27.57
26.78
The FIFA World Cup was one of the biggest sporting events of 2018. The file WC2018TeamAge contains the average age of the players (years, in 2018) of the 32 teams that qualified for the event. These average ages were:
Data were 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 did you choose?c. What are the six class
Planning and preparing for the unexpected, especially in response to a security incident, is one of the greatest challenges faced by information technology professionals today. An incident is described as any violation of policy, law, or unacceptable act that involves information assets. Incident
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
An Ipsos poll asked 1,004 adults “If purchasing a used car made certain upgrades or features more affordable, what would be your preferred luxury upgrade?” The results indicated that 9% of males and 14% of females answered window tinting.Source: Ipsos, “Safety Technology Tops the List of Most
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 subdivided into project categories (Film & Video,
A survey of 1,520 Americans adults asked “Do you feel overloaded with too much information?” The results indicate that 23%of females feel information overload compared to 17% of males.The results are:GENDER OVERLOADED Male Female Total Yes 134 170 304 No 651 565 1,216 Total 785 735 1,520
Timetric’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 the insurance industry in the coming year. Those responses
The Energy Information Administration reported the following sources of electricity in the United States in July 2017.Source MWh (000)Coal 127,959 Hydroelectric 21,455 Natural gas 114,270 Other gas 1,211 Nuclear 71,314 Petroleum coke and liquids 1,747 Renewable sources other than hydroelectric and
A sample of companies were asked three questions about analytics and artificial intelligence usage and their answers stored in Business Analytics , Machine Learning , and Self-learning Robots .The following tables summarize those answers.Source: Data extracted from A. Ng and N. Jacobstein, “How
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 consumers by complaint category for 2016.Category
The following table, stored in Smartphone Sales , represents the annual market share (percentage) of smartphones, by type, for the years 2011 through 2016.Type 2011 2012 2013 2014 2015 2016 Android 49.2% 69.0% 78.8% 81.5% 80.7% 80.7%iOS 18.8% 18.7% 15.1% 14.8% 17.7% 17.7%Microsoft 1.8% 2.5% 3.3%
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