Questions from Business Statistics

Q: For the week ended January 15, 2009, the bullish sentiment

For the week ended January 15, 2009, the bullish sentiment of individual investors was 27.6% (AAII Journal). The bullish sentiment was reported to be 48.7% one week earlier and 39.7% one month earlier...

Q: Major League Baseball franchises rely on attendance for a large share of

Major League Baseball franchises rely on attendance for a large share of their total revenue, and weekend games are particularly important. The following table shows the attendance for the Houston Ast...

Q: The file Cost Living contains the cost of living indexes and the

The file Cost Living contains the cost of living indexes and the population densities (number of people per square mile) for 61 cities in the United States. The cost of living index measures the cost...

Q: Jensen Tire & Auto is in the process of deciding whether to

Jensen Tire & Auto is in the process of deciding whether to purchase a maintenance contract for its new computer wheel alignment and balancing machine. Managers feel that maintenance expense shoul...

Q: The following data show the annual revenue ($ millions) and the

The following data show the annual revenue ($ millions) and the estimated team value ($ millions) for the 30 Major League Baseball teams (Forbes website). a. Develop a scatter diagram with Revenue o...

Q: Hamilton County judges try thousands of cases per year. In an

Hamilton County judges try thousands of cases per year. In an overwhelming majority of the cases disposed, the verdict stands as rendered. However, some cases are appealed, and of those appealed, some...

Q: Best Buy, a nationwide retailer of electronics, computers, and

Best Buy, a nationwide retailer of electronics, computers, and appliances, sells several brands of refrigerators. A random sample of models of full size refrigerators prices sold by Best Buy and the c...

Q: In 2014, the Centers for Disease Control and Prevention reported the

In 2014, the Centers for Disease Control and Prevention reported the percentage of people 18 years of age and older who smoke. Suppose that a study designed to collect new data on smokers and nonsmoke...

Q: Americans tend to dine out multiple times per week. The number

Americans tend to dine out multiple times per week. The number of times a sample of 20 families dined out last week provides the following data. a. Compute the mean and median. b. Compute the first a...

Q: The following table reports the price, horsepower, and ¼-mile

The following table reports the price, horsepower, and ¼-mile speed for 16 popular sports and GT cars.