Questions from Essentials of Statistics

Q: The U.S. National Center for Health Statistics compiles data

The U.S. National Center for Health Statistics compiles data on the length of stay by patients in short-term hospitals and publishes its findings in Vital and Health Statistics. A random sample of 21...

Q: Consider these sample data: x1 = 1, x2 = 7

Consider these sample data: x1 = 1, x2 = 7, x3 = 4, x4 = 5, x5 = 10. a. Find n. b. Compute Σxi. c. Determine x

Q: The U.S. Federal Highway Administration conducts studies on motor

The U.S. Federal Highway Administration conducts studies on motor vehicle travel by type of vehicle. Results are published annually in Highway Statistics. A sample of 15 cars yields the following data...

Q: An article by D. Schaefer et al. (Journal of

An article by D. Schaefer et al. (Journal of Tropical Ecology, Vol. 16, pp. 189–207) reported on a long-term study of the effects of hurricanes on tropical streams of the Luquillo Experimental Forest...

Q: The members of a population are numbered 1–4.

The members of a population are numbered 1–4. a. List the 6 possible samples (without replacement) of size 2 from this population. b. If an SRS of size 2 is taken from the population, what are the cha...

Q: The publication California Wild: Natural Sciences for Thinking Animals has a

The publication California Wild: Natural Sciences for Thinking Animals has a monthly feature called the “Sky Guide” that keeps track of the sunrise and sunset for the first day of each month in San Fr...

Q: An issue of Brokerage Report discussed the capital spending of telecommunications companies

An issue of Brokerage Report discussed the capital spending of telecommunications companies in the United States and Canada. The capital spending, in thousands of dollars, for each of 27 telecommunica...

Q: In the article “Material Culture as Memory: Combs and Cremations

In the article “Material Culture as Memory: Combs and Cremations in Early Medieval Britain” (Early Medieval Europe, Vol. 12, Issue 2, pp. 89–128), H. Williams discussed the frequency of cremation buri...

Q: In the article, “Assessing Claims Made by a Pizza Chain

In the article, “Assessing Claims Made by a Pizza Chain” by P. Dunn, (Journal of Statistics Education, Vol. 20, No. 1, pp. 1–19), a sample of pizzas from Domino’s was collected. The intention of the s...

Q: Water parks are a huge summer attraction for vacationers in the United

Water parks are a huge summer attraction for vacationers in the United States. The Global Attractions Attendance Report, published by the Themed Entertainment Association, provides the attendance repo...