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Biologists are interested in determining factors that predict the amount of time an animal sleeps during the day. To investigate the possibilities, Allison and Ciccetti (1976) gathered information about 62 different mammals. Their data is presented in the sample data table Sleeping Animals.jmp. The variables describe body weight, brain weight, total time spent sleeping in … Read more

The sample data table Decathlon.jmp (Perkiömäki, 1995) contains decathlon scores from several winners in various competitions. Although there are 10 events, they fall into groups of running, jumping, and throwing. (a) Suppose you were going to predict scores on the 100m running event. Which of the other nine events do you think would be the … Read more

The sample data table Tiretread.jmp contains the results of a three-factor response surface experiment. The factors are Silica, Silane, and Sulfur. The experiment was conducted to optimize four responses: Abrasion, Modulus, Elongation, and Hardness. The goals for the four responses have been added as column properties. (Note: Click on the asterisk next to each response … Read more

The sample data table Mushroom.jmp contains 22 characteristics of 8,124 edible and poisonous mushroom. To see probabilities, select Display Options > Show Split Prob from the top red triangle menu. (a) Use the Partition platform to build a seven split model to predict whether a mushroom is edible based on the 22 characteristics. (b) Which … Read more

  A new employee that has just been hired becomes acquainted with the organization as well as his or her new coworkers, department, and job during orientation. This is a time for the organization to help the employee assimilate to the new culture of the organization. Orientation would typically last for one to two days, … Read more

Conduct a search of the websites of your local and state health departments regarding activities in epidemiology. Then log on to the websites for the following national and international agencies. Describe how an epidemiologist might contribute to the following employment settings: a. A local health department b. A state government health agency, such as a … Read more

Capstone exercise: This exercise is included here because it requires skills developed in the previous chapters of the text. Select a data-based article from the American Journal of Public Health, the American Journal of Epidemiology, or other public health journal of your choice. Refer to Appendix A (Guide to the Critical Appraisal of an Epidemiologic/Public … Read more

Growth technology companies typically do not issue dividends to their shareholders. Their argument is that their IRR is much higher than the historical Wall Street growth indices, and their earning are better invested into new products. If we assume that share prices grow at the same rate as a company’s IRR, how many years would … Read more

One of the major concerns for middle-aged folks is when to retire and start receiving social security payments. The Social Security Administration (SSA) gives you the following guidelines: a. Retire at age 62. SSA payments are reduced by 25 percent, and you can only earn less than $14,000/year before further reduction of your payments. b. … Read more

The ROI tables are based on simple compounding of interest, looking into the present (P), future (F), or into annual (A) equivalents. Can you use them to calculate the mortgage monthly payments used for purchasing a home? Without getting too bogged down in formulas, explain how mortgage monthly rates are calculated and how they are … Read more