Questions from Business Statistics

Q: A poll for the presidential campaign sampled 491 potential voters in June

A poll for the presidential campaign sampled 491 potential voters in June. A primary purpose of the poll was to obtain an estimate of the proportion of potential voters who favored each candidate. Ass...

Q: In Table 15.12 we provided estimates of the probability of

In Table 15.12 we provided estimates of the probability of using the coupon in the Simmons Stores catalog promotion. A different value is obtained for each combination of values for the independent va...

Q: Community Bank would like to increase the number of customers who use

Community Bank would like to increase the number of customers who use payroll direct deposit. Management is considering a new sales campaign that will require each branch manager to call each customer...

Q: Over the past few years the percentage of students who leave Lakeland

Over the past few years the percentage of students who leave Lakeland College at the end of the first year has increased. Last year Lakeland started a voluntary one-week orientation program to help fi...

Q: The Tire Rack maintains an independent consumer survey to help drivers help

The Tire Rack maintains an independent consumer survey to help drivers help each other by sharing their long-term tire experiences. The data contained in the file named TireRatings show survey results...

Q: The owner of Showtime Movie Theaters, Inc., would like to

The owner of Showtime Movie Theaters, Inc., would like to predict weekly gross revenue as a function of advertising expenditures. Historical data for a sample of eight weeks follow. a. Develop an es...

Q: The National Football League (NFL) records a variety of performance

The National Football League (NFL) records a variety of performance data for individuals and teams. To investigate the importance of passing on the percentage of games won by a team, the following dat...

Q: PC Magazine provided ratings for several characteristics of computer monitors, including

PC Magazine provided ratings for several characteristics of computer monitors, including an overall rating (PC Magazine website). The following data show the rating for contrast ratio, resolution, and...

Q: The Condé Nast Traveler Gold List provides ratings for the top 20

The Condé Nast Traveler Gold List provides ratings for the top 20 small cruise ships. The data shown below are the scores each ship received based upon the results from Condé...

Q: Spring is a peak time for selling houses. The file SpringHouses

Spring is a peak time for selling houses. The file SpringHouses contains the selling price, number of bathrooms, square footage, and number of bedrooms of 26 homes sold in Ft. Thomas, Kentucky, in spr...