Questions from Essentials of Statistics

Q: From the document National Vital Statistics Reports, a publication of the

From the document National Vital Statistics Reports, a publication of the National Center for Health Statistics, we obtained the following frequency distribution for the ages of women who became mothe...

Q: The National Center for Health Statistics publishes information about birth rates (

The National Center for Health Statistics publishes information about birth rates (per 1000 population) in the document National Vital Statistics Report. The following table provides a frequency distr...

Q: In the paper “Cloudiness: Note on a Novel Case of

In the paper “Cloudiness: Note on a Novel Case of Frequency” (Proceedings of the Royal Society of London, Vol. 62, pp. 287–290), K. Pearson examined data on daily degree of cloudiness, on a scale of 0...

Q: A classic study by F. Thorndike on the number of calls

A classic study by F. Thorndike on the number of calls to a wrong number appeared in the paper “Applications of Poisson’s Probability Summation” (Bell Systems Technical Journal, Vol. 5, pp. 604–624)....

Q: Each year, thousands of high school students bound for college take

Each year, thousands of high school students bound for college take the Scholastic Assessment Test (SAT). This test measures the verbal and mathematical abilities of prospective college students. Stud...

Q: From the U.S. Census Bureau, in the document

From the U.S. Census Bureau, in the document International Data Base, we obtained data on the total fertility rates for women in various countries. Those data are presented on the WeissStats site. The...

Q: Students in an introductory statistics course at the U.S.

Students in an introductory statistics course at the U.S. Air Force Academy participated in Nabisco’s “Chips Ahoy! 1,000 Chips Challenge” by confirming that there were at least 1000 chips in every 18-...

Q: Refer to the simulation of human gestation periods discussed. a

Refer to the simulation of human gestation periods discussed. a. Sketch the normal curve for human gestation periods. b. Simulate 1000 human gestation periods. c. Approximately what values would you...

Q: In a study by P. M. West titled “The

In a study by P. M. West titled “The Lion’s Mane” (American Scientist, Vol. 93, No. 3, pp. 226–236), the effects of the mane of a male lion as a signal of quality to mates and rivals was explored. Fou...

Q: In the paper, “Delayed Metamorphosis of a Tropical Reef Fish

In the paper, “Delayed Metamorphosis of a Tropical Reef Fish (Acanthurus triostegus): A Field Experiment” (Marine Ecology Progress Series, Vol. 176, pp. 25–38), M. McCormick studied larval duration of...