Questions from Business Statistics

Q: The data set Igf contains measurements on people of various ages.

The data set Igf contains measurements on people of various ages. The main variable of interest is the level of insulin-like growth factor (igÆ’) (J. Clin. Endocrinol. M...

Q: For each of the following, list the sample space and tell

For each of the following, list the sample space and tell whether you think the events are equally likely: 1. Roll two dice; record the sum of the numbers. 2. A family has 3 children; record each chil...

Q: A survey of autos parked in student and staff lots at a

A survey of autos parked in student and staff lots at a large university classified the brands by country of origin, as seen in the table. 1. What percent of all the cars surveyed were foreign? 2. Wha...

Q: Archery is one of the few Olympic sports in which men and

Archery is one of the few Olympic sports in which men and women compete on an equal footing. Both contests start with 64 archers, and the competitors first launch 72 arrows at a distance of 70 m from...

Q: Over the course of the modern Olympics, France, Italy,

Over the course of the modern Olympics, France, Italy, and Great Britain have participated in roughly the same number of Olympic games. But is the distribution of their medals the same, or do they dif...

Q: The Belmont Stakes is the last and longest of the three horse

The Belmont Stakes is the last and longest of the three horse races that make up the Triple Crown. Curiously, some of the Belmont races have been run clockwise around the track, and others have been r...

Q: In the text you have examined data in the file Body fat

In the text you have examined data in the file Body fat. In particular, you made regression models to predict %Body Fat from Waist size. But there are many other variables in the file. Using the stati...

Q: The Paralyzed Veterans of America (PVA) is a Congressionally chartered

The Paralyzed Veterans of America (PVA) is a Congressionally chartered veterans service organization that represents the interests of paralyzed veterans. The agency provides a range of services to vet...

Q: A person grade in school is generally identified by a number.

A person grade in school is generally identified by a number. 1. Give an example of a Why in which grade level is treated as categorical. 2. Give an example of a Why in which grade level is treated as...

Q: The U.S. Postal Service uses five-digit ZIP

The U.S. Postal Service uses five-digit ZIP codes to identify locations to assist in delivering mail. 1. In what sense are ZIP codes categorical? 2. Is there any ordinal sense to ZIP codes? In other w...