Questions from Business Statistics

Q: Consider the costs charged for treatment of heart failure and shock by

Consider the costs charged for treatment of heart failure and shock by hospitals in the Puget Sound area, using the data from Table 3.8.6 of Chapter 3. a. Summarize the costs. b. Draw a box plot. c. D...

Q: Consider the data on CEO compensation in computer programming, data processing

Consider the data on CEO compensation in computer programming, data processing, and other related services firms from Table 3.8.7 of Chapter 3. a. Draw a detailed box plot. b. Find the 10th percentile...

Q: Consider the 20,000 median household income values in the donations

Consider the 20,000 median household income values in the donations database (available on the companion site). These represent the median household income for the neighborhood of each potential donor...

Q: Use the data set from problem 21 of Chapter 3 on poor

Use the data set from problem 21 of Chapter 3 on poor quality in the production of electric motors. a. Find the average and median to summarize the typical level of problems with quality of production...

Q: Many marketers assumed that consumers would go for reduced-calorie foods

Many marketers assumed that consumers would go for reduced-calorie foods in a big way. While these “light” foods caught on to some extent, they hadnâ€
...

Q: Consider predicting annual salary from age, experience, and an interaction

Consider predicting annual salary from age, experience, and an interaction term. a. Create a new variable, “interaction,” by multiplying age by experience for each employee. b. Find the regression equ...

Q: Using the data from Table 2.6.7 of Chapter

Using the data from Table 2.6.7 of Chapter 2 for the 30 Dow Jones Industrial companies percent changes since January 2015: a. Find the mean percent change. b. Find the median percent change. c. Find t...

Q: Using the data from Table 2.6.8 of Chapter

Using the data from Table 2.6.8 of Chapter 2 for daily values for the Dow Jones Industrial Average: a. Find the mean net change. b. Find the median net change. c. Find the five-number summary for net...

Q: Consider the 20,000 people in the donations database (on

Consider the 20,000 people in the donations database (on the companion site). a. Construct box plots to compare median household income and per capita income (these specify two columns in the database...

Q: You have begun a quality improvement campaign in your paper mill,

You have begun a quality improvement campaign in your paper mill, and, as a result, lots of pieces of paper come to your desk. Each one describes a recent problem with customers according to the follo...