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Statistics For Business And Economics 13th Edition James T. McClave, P. George Benson, Terry Sincich - Solutions

Are university faculty members in Science, Technology, Engineering, and Math (STEM) disciplines more satisfied with their job than non-STEM faculty? And if so, does this difference vary depending on gender? These were some of the questions of interest in a study published in the Journal of Women
Under what conditions will consumers dispose of recyclable paper in the garbage? This was the question of interest in an article published in the Journal of Consumer Research (December 2013). In one of the studies conducted, the researchers provided each of 160 college students with a sheet of
Criminologists investigated whether mugshot group size (the number of mugshots shown at one time) has an effect on selections made by an eyewitness to a crime (Applied Psychology in Criminal Justice, April 2010). A sample of 90 college students was shown a video of a simulated theft. Shortly
Refer to the Journal of Experimental Social Psychology (Vol. 45, 2009) study of whether buying gifts truly buys love, Exercise 1.34. Recall that study participants were randomly assigned to play the role of gift-giver or gift-receiver. Gift-receivers were asked to provide the level of appreciation
Refer to Exercise 9.92. Using an experiment wise error rate of .05, Tukey confidence intervals for the difference between mean rates of return for all possible pairs of fund types are given below.Comparison __________________ Tukey Confidence IntervalμLarge - μMedium
Tourism Web sites such as Trip Advisor provide a medium for online marketing of a travel destination. Actual tourists' evaluations and reviews of this marketing tool-called destination image-were assessed in a study published in the Journal of Destination Marketing & Management (October 2015).
Refer to the Journal of Transportation Engineering (June 2013) study of traffic sign maintenance, Exercise 8.54. Recall that civil engineers estimated the proportion of traffic signs maintained by the North Carolina Department of Transportation (NCDOT) that fail minimum retro reflectivity
Text messaging on mobile devices (e.g., cell phones, smartphones) often requires typing in awkward positions that may lead to health issues. A group of Temple University public health professors investigated this phenomenon and published their results in Applied Ergonomics (March 2012). One portion
Refer to the Urban Studies (June 2011) analysis of tenants renting space in United Kingdom regional shopping malls, Exercise 2.11. Recall that tenants were categorized into five different-size groups based on amount of floor space: anchor tenants (more than 30,000 sq. ft.), major space users
Refer to the Journal of Destination Marketing & Management (October 2015) study of tourist destination image, Exercise 10.11. Recall that the study analyzed the posts submitted on TripAdvisor about The Historic Areas of Istanbul (Turkey) page. In addition to destination image component, the
Business Travel News (July 28, 2014) reported the results of its annual Travel Manager Salary & Attitude survey. A total of 248 travel professionals, 76 males and 172 females, participated in the survey. One question asked for the travel professional's opinion on the fairness of his/her salary.
Can the package design of a food product, along with accompanying sounds, influence how the consumer will rate the taste of the product? A team of experimental psychologists reported on a study that examined how rounded or angular package shapes and high- or low-pitched sounds can convey
The hiring of women in construction and construction-related jobs has steadily increased over the years. A study was conducted to provide employers with information designed to reduce the potential for turnover of female employees (Journal of Professional Issues in Engineering Education &
Refer to The Journal of Applied Business Research (January/February 2011) study of offshoring companies, Exercise 10.10. In addition to U.S. firms, CEOs from international companies were also surveyed on their offshoring positions. The number of firms in each position category (adapted from the
Refer to the Applied Ergonomics (March 2012) study of mobile device typing strategies, Exercise 10.13. Recall that typing style of mobile device users was categorized as (1) device held with both hands/both thumbs typing, (2) device held with right hand/right thumb typing, (3) device held with left
Refer to the Decision Analytics (October 2015) study of the features of Apple's iPhone 6, Exercise 2.13. Recall that opinions were extracted from a sample of 552 tweets obtained from the social media site Twitter.com. The tweets originated in four cities: San Francisco (138 tweets), New York (182),
Refer to the Journal of Consumer Research (December 2013) study of consumer recycling behavior, Exercise 3.17. Recall that 78 college students were asked to dispose of cut paper they used during an exercise. Half the students were randomly assigned to list five uses for the cut paper (usefulness is
Refer to the Human Factors (December 2015) study on how well firefighter gloves fit, Exercise 3.38. Recall that in a sample of 586 firefighters who reported their glove size, the researchers classified firefighters according to whether the gloves fit well or poorly and by gender. A summary of the
Refer to the study of a customer's motivation to use a technology-based self-service (TBSS) encounter developed for a firm's discount coupons, Exercise 10.15. Recall that the coupon users received the coupons in one of three ways-mail only (nontechnology user), Internet only (TBSS user), and both
Refer to Exercise 10.43. In addition to the 1,072 charitable givers who reported that their charitable contributions were motivated by tax considerations, another 1,693 givers reported no tax motivation, giving a total sample of 2,765 charitable givers. Of the 1,072 who were motivated by tax
Search Engine Land reported on the "search" shares (i.e., percentage of all Internet searches) for the most popular search engines available on the Web. In December 2013, Google accounted for 65% of all worldwide searches, Baidu for 8%, Yahoo! for 5%, Yandex for 3%, MSN for 2.5%, and all other
Refer to the Process Safety Progress (December 2004) and U.S. Chemical Safety and Hazard Investigation Board study of industrial accidents caused by management system failures, Exercise 2.150. The table below gives a breakdown of the root causes of a sample of 83 incidents. Are there significant
Refer to the Pew Research Center Survey (December 2015) of current and former cable/satellite TV customers, Exercise 2.4. In a representative sample of 2,001 adults living in the United States, 1,521 reported that they currently receive cable or satellite TV service at home; 180 revealed that they
Refer to the International Conference on Social Robotics (Vol. 6414, 2010) study of how engineers design social robots, Exercise 2.5. In a random sample of 106 social robots obtained through a Web search, the researchers found that 63 were built with legs only, 20 with wheels only, 8 with both legs
Business Ethics (Fall 2005) published rankings of master in business administration (MBA) programs worldwide. Each of 30 business schools was rated according to student exposure to social and environmental issues in the classroom. Ratings ranged from 1 star (lowest-rated group) to 5 stars
Refer to the Museum Management and Curatorship (June 2010) worldwide survey of 30 leading museums of contemporary art, Exercise 2.14. Recall that each museum manager was asked to provide the performance measure used most often for internal evaluation. A summary of the results is provided in the
The effect of tablet surface area and volume on the rate at which a drug is released in a controlled-release dosage is of interest to chemical companies. In one study, six similarly shaped tablets were prepared with different weights and thicknesses, and the ratio of surface area to volume was
Refer to Glassdoor Economic Research firm's 2015 ranking of the 40 best-paid CEOs in Table 2.1. Recall that data were collected on a CEO's age and ratio of salary to a typical worker's pay at the firm. One objective is to predict the ratio of salary to worker pay based on the CEO's age. a. In this
An observational study of 19 managers from a medium-sized manufacturing plant investigated which activities successful managers actually perform (Journal of Applied Behavioral Science, August 1985). To measure success, the researchers devised an index based on the manager's length of time in the
Refer to the Forbes magazine 2015 report on the financial standings of each team in the National Football League (NFL), Exercise 2.26. The table listing the current value (without deduction for debt, except stadium debt) and operating income for each team is reproduced above.a. Propose a
Firms conscious of the energy efficiency of proposed new structures are interested in the relation between yearly energy consumption and the number of square feet of building shell. The table below lists the energy consumption in British thermal units (a BTU is the amount of heat required to raise
Models of past cost behavior are called cost functions. Factors that influence costs are called cost drivers (Horngren, Datar, and Rajan, Cost Accounting, 2011). The cost data shown in the next column are from a rug manufacturer. Indirect manufacturing labor costs consist of machine maintenance
Refer to Exercise 2.124. A team of civil engineers used simple linear regression analysis to model the ratio of repair to replacement cost of commercial pipe as a function of the pipe's diameter. (IHS Journal of Hydraulic Engineering, September 2012.) a. In this study, identify the dependent and
A study presented at the 2010 IEEE International Conference on Web Intelligence and Intelligent Agent Technology investigated whether the volume of chatter on Twitter.com could be used to forecast the box-office revenues of movies. For each in a sample of 24 recent movies, opening weekend
Refer to the data on average state Math SAT scores for 2010 and 2014, Exercise 2.27. The first five observations and last two observations in the file are reproduced in the next table. In Exercise 2.128 (p. 108), you examined the relationship between the 2010 Math SAT scores and the 2014 Math SAT
Refer to the IHS Journal of Hydraulic Engineering (September 2012) study of water pipes, Exercise 11.12. Recall that a team of civil engineers used regression analysis to estimate y = the ratio of repair to replacement cost of commercial pipe. The independent variable in the regression analysis was
The Joint Strike Fighter (JSF) program, operated by the U.S. Department of Defense, is a global defense program that involves acquisition of military fighter jets for participating allied countries. An article in the Air & Space Power Journal (March-April 2014) reported on the estimated annual
According to a theory proposed in the Academy of Management Journal (August 2015), top leaders in business are selected based on their organization's performance as well as the leader's charisma. To test this theory, the researchers collected data on 24 U.S. presidential elections from 1916 to
Refer to the College Choice 2015 Rankings of National Research Universities, Exercise 2.43. Recall that data on academic reputation score, financial aid awarded, net cost to attend, median salary during early career, percentage of alumni who feel their work makes a better place in which to live,
Refer to the simple linear regression relating y = 2014 Math SAT scores to x = 2010 Math SAT scores, Exercise 11.19. A portion of the SPSS printout of the analysis is shown below.a. Locate the values of SSE, s2, and s on the SPSS printout. b. Give a practical interpretation of the value of s.
Refer to the IHS Journal of Hydraulic Engineering (September 2012) study of water pipes, Exercise 11.21. Refer, again, to the Minitab simple linear regression printout relating y = the ratio of repair to replacement cost of commercial pipe to x = the diameter (in millimeters) of the pipe. a. Locate
Refer to the Air & Space Power Journal (March-April 2014) study of the Joint Strike Fighter program, Exercise 11.22. You fit the simple linear regression model relating y = estimated annual cost to x = year of initial aircraft operation. a. Find s, the estimated standard deviation of the random
Refer to Exercise 1.30 (p. 28) and the data on structurally deficient highway bridges compiled by the Federal Highway Administration (FHWA) into the National Bridge Inventory (NBI). For each state, the NBI lists the number of structurally deficient bridges and the total area (thousands of square
Refer to Exercise 11.23 and the study of software millionaires and their birthdays. The data are reproduced on p. 639.a. Find SSE, s2, and s for the simple linear regression model relating number (y) of software millionaire birthdays in a decade to total number (x) of U.S. births.b. Find SSE, s2,
Refer to the College Choice 2015 Rankings of National Research Universities, Exercise 11.29. From among the variables on the file-academic reputation score, financial aid awarded, net cost to attend, early career median salary, percent of alumni who feel their work makes a better place in which to
To improve the quality of the output of any production process, it is necessary first to understand the capabilities of the process (Gitlow, Quality Management, 2004). In a particular manufacturing process, the useful life of a cutting tool is related to the speed at which the tool is operated. The
Refer to the SPSS simple linear regression relating y = average state SAT Math score in 2014 with x = average state SAT Math score in 2010, Exercise 11.19.a. Give the null and alternative hypotheses for determining whether a positive linear relationship exists between y and x.b. Locate the p-value
Plot the following lines: a. y = 4 + x b. y = 5 - 2x c. y = -4 + 3x d. y = -2x e. y = x f. y = .50 + 1.5x
Refer to the IHS Journal of Hydraulic Engineering (September 2012) study of water pipes susceptible to breakage, Exercises 11.21 and 11.37. Recall that civil engineers used simple linear regression to model the ratio of repair to replacement cost of commercial pipe (y) as a function of the diameter
Refer to Exercise 11.23 and the study of whether birth decade can predict the number of software millionaires born in the decade.a. Construct a 95% confidence interval for the slope of the model, E(y) = β0 + β1x, where x = total number of U.S. births and y = number of software millionaire
Refer to the Academy of Management Journal (August 2015) study of the charisma of top-level leaders, Exercise 11.28. Recall that the researchers used data on 24 U.S. presidential election years to model Democratic vote share (y) as a function of the difference (x) between the Democratic and
Refer to the Air & Space Power Journal (March-April 2014) study of the Joint Strike Fighter program, Exercises 11.22 and 11.38. Recall that you fit the simple linear regression model relating y = estimated annual cost to x = year of initial aircraft operation. Find and interpret a 90%
Refer to the College Choice 2015 Rankings of National Research Universities, Exercise 11.43. Now consider a simple linear regression model for a university's academic reputation score (y), using early career median salary (x) as the independent variable. Is there sufficient evidence of a positive
Refer to the Nature (March 20, 2008) study of the use of punishment in cooperation games, Exercise 11.18. Recall that college students repeatedly played a version of the game "prisoner's dilemma," and the researchers recorded the average payoff and the number of times cooperation, defection, and
Why do we generally prefer a probabilistic model to a deterministic model? Give examples for when the two types of models might be appropriate. Discuss.
Refer to the Journal of Consumer Research (August 2011) study of the speed with which consumers decide to purchase a product, Exercise 8.13. Recall that the researchers theorized that consumers with last names that begin with letters later in the alphabet would tend to acquire items faster than
Refer to the Journal of Food Science (February 2014) taste testing study, Exercise 9.58. Recall that a sample of 200 college students and staff used a scale ranging from -100 (for strongest imaginable dislike) to +100 (for strongest imaginable like) to rate their most favorite and least favorite
Refer to Exercise 11.23 and the study of the seemingly disproportionate number of software millionaires born around the year 1955. a. Find the coefficient of determination for the simple linear regression model relating number (y) of software millionaire birthdays in a decade to total number (x) of
When analyzing big data (large data sets with many variables), business researchers often encounter the problem of missing data (e.g., non-response). Typically, an imputation method will be used to substitute in reasonable values (e.g., the mean of the variable) for the missing data. An imputation
Refer to the Nature (March 20, 2008) study of the use of punishment in cooperation games, Exercise 11.18. Recall that simple linear regression was used to model a player's average payoff (y) as a straight-line function of the number of times punishment was used (x) by the player. a. If the
Refer to Exercise 11.40 and the study of software millionaires and their birthdays. Recall that simple linear regression was used to model number (y) of software millionaire birthdays in a decade as a straight-line function of number (x) of CEO birthdays.a. Consider a future decade where the number
Highly toxic wastewater is produced during the manufacturing of dry-spun acrylic fiber. One way to lessen toxicity is to remove the nitrogen from the wastewater. A group of environmental engineers investigated a promising method-called anaerobic ammonium oxidation-for nitrogen removal and reported
The performance of a solar cell can deteriorate when atmospheric dust accumulates on the solar panel surface. In the International Journal of Energy and Environmental Engineering (December 2012), researchers at the Renewable Energy Research Laboratory, University of Lucknow (India), estimated the
The editors of the Academy of Management Journal (April 2016) called for expanding management-related research of African countries by noting the diversity of the countries. They illustrated this diversity by comparing a sample of 10 African countries with China, Germany, and the United States on
Refer to the Human Factors (March 2014) study of shared leadership by the cockpit and cabin crews of a commercial airplane, Exercise 8.14. Recall that simulated flights were taken by 84 six-person crews, where each crew consisted of a 2-person cockpit (captain and first officer) and a 4-person
Refer to the Financial Analysts Journal (July/August 2008) comparison of earnings forecasts of buy-side and sell-side analysts, Exercise 12.90. Recall that the professors used regression to model the relative optimism (y) of the analysts' 3-month horizon forecasts as a function of x1 = {1 if the
Refer to the Human Resource Management Journal (October 2008) study of workplace bullying, Exercise 12.91. Recall that multiple regression was used to model an employee's intention to leave (y) as a function of bullying (x1, measured on a quantitative scale) and perceived organizational support
Refer to the Journal of Applied Psychology (January 2011) study of the relationship between task performance and conscientiousness, Exercise 12.94. Recall that y = task performance score (measured on a 30-point scale) was modeled as a function of x1 = conscientiousness score (measured on a scale of
Refer to the Journal of Personality and Social Psychology (February 2012) study of on-the-job agreeableness and wages, Exercise 12.92. The researchers modeled mean income, E(y), as a function of both agreeableness score (x1) and a dummy variable for gender (x2 = 1 if male, 0 if female). Suppose the
Refer to the National Association of Realtors data on sales price (y), region (NE, NW, S, or W), and sales volume for 28 recently sold, single-family homes, Exercise 12.95. You fit a complete second-order model for E(y) as a function of region and sales volume. a. Conduct a nested-model F-test to
Refer to the Academy of Management Journal (October 2015) study of how time pressure affects team job performance, Exercise 12.89. Recall that the researchers hypothesized a complete second-order model relating team performance (y) to perceived time pressure (x1), and whether or not the team had an
An article in the International Journal of Production Economics (Vol. 171, 2016) investigated the factors associated with a firm's supply chain risk management performance (y). Five potential independent variables (all measured quantitatively) were considered: (1) firm size, (2) supplier
The Environmental Protection Agency (EPA) wants to determine whether the hot-water runoff from a particular power plant located near a large gulf is having an adverse effect on the marine life in the area. The goal is to acquire a prediction equation for the number of marine animals located at
When a popular music artist dies, sales of the artist's albums often increase dramatically. A study of the effect of after-death publicity on album sales was published in Marketing Letters (March 2016). The following data were collected weekly for each of 446 albums of artists who died a natural
"Lead users" describe creative individuals who are on the leading edge of an important market trend. Creativity and Innovation Management (February 2008) published an article on identifying the social network characteristics of lead users of children's computer games. Data were collected for n =
Refer to the Engineering Project Organizational Journal (Vol. 3, 2013) study of the relationship between emotional intelligence of individual team members and their performance during an engineering project, Exercise 12.33. Using data on n = 23 teams, you fit a first-order model for mean project
Refer to the Journal of Applied Psychology (January 2011) study of the determinants of task performance, Exercise 12.94. In addition to x1 = conscientiousness score and x2 = {1 if highly complex job, 0 if not}, the researchers also used x3 = emotional stability score, x4 = organizational
Refer to the Heat Transfer Engineering (Vol. 34, 2013) study of bubble behavior in subcooled flow boiling, Exercise 12.46. Using data saved in the file, you fit an interaction model for bubble density (y) as a function of x1 = mass flux and x2 = heat flux. Conduct a complete residual analysis for
Refer to the Journal of Marketing Research (October 2015) study of the impact of banning a controversial sponsor on a sports team's success, Exercise 12.81. Recall that markets for English soccer clubs were classified as one of four types: (1) banned alcohol sponsors but now have other sponsors,
Refer to the Journal of Personality and Social Psychology (Feb. 2012) study of on-the-job agreeableness and wages, Exercise 12.107. Recall that the researchers modeled mean income, E(y), as a function of both agreeableness score (x1) and a dummy variable for gender (x2 = 1 if male, 0 if female).
The first-order model E(y) = Î²0 + Î²1x1 was fit to n = 19 data points. A residual plot for the model is provided below. Is the need for a quadratic term in the model evident from the residual plot? Explain.
Consider a multiple regression model for predicting the total number of runs scored by a Major League Baseball (MLB) team during a season. Using data on number of walks (x1), singles (x2), doubles (x3), triples (x4), home runs (x5), stolen bases (x6), times caught stealing (x7), strike outs (x8),
Researchers at Montana State University have written a tutorial on an empirical method for analyzing before and after highway crash data (Montana Department of Transportation, Research Report, May 2004). The initial step in the methodology is to develop a Safety Performance Function (SPF)-a
Many tourists choose a vacation destination based on the newness or uniqueness (i.e., the novelty) of the itinerary. The relationship between novelty and vacationing golfers' demographics was investigated in the Annals of Tourism Research (Vol. 29, 2002). Data were obtained from a mail survey of
How much influence does the media have on one's decision to undergo cosmetic surgery? This was the question of interest in Body Image:An International Journal of Research (March 2010). In the study, 170 college students answered questions about their impressions of reality TV shows featuring
In industry cooling applications (e.g., cooling of nuclear reactors), a process called subcooled flow boiling is often employed. Subcooled flow boiling is susceptible to small bubbles that occur near the heated surface. The characteristics of these bubbles were investigated in Heat Transfer
Because the coefficient of determination R2 always increases when a new independent variable is added to the model, it is tempting to include many variables in a model to force R2 to be near 1. However, doing so reduces the degrees of freedom available for estimating Ïƒ2, which adversely affects
The uncertainty of the weather during the growing season, the phenomenon that wine tastes better with age, and the fact that some vineyards produce better wines than others encourage speculation concerning the value of a case of wine produced by a certain vineyard during a certain year (or
The User Experience Professionals Association (UXPA) supports people who research, design, and evaluate the user experience of products and services. The UXPA periodically conducts a salary survey of its members (e.g., UXPA Salary Survey, November 2014). One of the authors of the report, Jeff
Refer to the study of runs scored in Major League Baseball games, Exercise 12.14. Multiple regression was used to model total number of runs scored (y) of a team during the season as a function of number of walks (x1), number of singles (x2), number of doubles (x3), number of triples (x4), number
Refer to the analysis of data from College Choice 2015 Rankings of National Research Universities, Exercise 12.20. You fit a first-order multiple regression model to predict academic reputation score (y) using financial aid awarded (x1), net cost (x2), early career salary (x3), work makes a better
The Engineering Project Organizational Journal (Vol. 3, 2013) published the results of an exploratory study designed to gain a better understanding of how the emotional intelligence of individual team members relate directly to the performance of their team during an engineering project.
Can food servers increase their tips by complimenting the customers they are waiting on? To answer this question, researchers collected data on the customer tipping behavior for a sample of 348 dining parties and reported their findings in the Journal of Applied Social Psychology (Vol. 40, 2010).
In poker, making bad decisions due to negative emotions is known as tilting. A study in the Journal of Gambling Studies (March, 2014) investigated the factors that affect the severity of tilting for online poker players. A survey of 214 online poker players produced data on the dependent variable,
The Journal of Consumer Research (November 2003) published a study of consumer behavior while waiting in a queue. A sample of n = 148 college students was asked to imagine that they were waiting in line at a post office to mail a package and that the estimated waiting time is 10 minutes or less.
A study in Industrial Marketing Management (February 2016) investigated the impact of service workers' (e.g., waiters and waitresses) personal resources on the quality of the firm's relationship with customers. The study focused on four types of personal resources: flexibility in dealing with
Refer to the Heat Transfer Engineering (Vol. 34, 2013) study of bubble behavior in subcooled flow boiling, Exercise 12.21. Recall that bubble density (liters per meters squared) was modeled as a function of mass flux (kilograms per meters squared per second) and heat flux (megawatts per meters
Refer to the Chance (Winter 2009) study of fourth-down decisions by coaches in the National Football League (NFL), Exercise11.69. Recall that statisticians at California State University, Northridge, fit a straight-line model for predicting the number of points scored (y) by a team that has a
The role of maintenance in energy saving in commercial refrigeration was the topic of an article in the Journal of Quality in Maintenance Engineering (Vol. 18, 2012). The authors provided the following illustration of data relating the efficiency (relative performance) of a refrigeration system to
Refer to the International Journal of Retail and Distribution Management (Vol. 39, 2011) study of shopping on Black Friday (the day after Thanksgiving), Exercise 6.16. Recall that researchers conducted interviews with a sample of 38 women shopping on Black Friday to gauge their shopping habits. Two

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