Assignment Problems - Applied Statistics I | STAT 700, Assignments of Statistics

Download Assignment Problems - Applied Statistics I | STAT 700 and more Assignments Statistics in PDF only on Docsity!

☺Problem 1.

Object recall study. Are men or women more adept at remembering where they leave misplaced items (like car keys)? According to University of Florida psychology professor Robin West, women show greater competence in actually finding these objects ( Explore , Fall 1998). Approximately 300 men and women from Gainesville, FL, participated in a study in which each person placed 20 common objects in a 12-room “virtual” house represented on a computer screen. Thirty minutes later, the subjects were asked to recall where they put each of the objects. For each object, a recall variable was measured as “yes” and “no.” a) Identify the population of interest. b) Identify the sample. c) Does the study involve descriptive or inferential statistics? Explain. d) Are the variables measured in the study quantitative or qualitative?

☺Problem 2.

Active nuclear power plants (NPP). The table below lists a sample of 20 states with active nuclear power plants. a) Find the mean, median, and mode for this data set. Comment. b) Draw a histogram for these data and comment on the shape of the distribution. State NPP (number) State NPP (number) Alabama 5 New Hampshire 1 Arizona 3 New York 6 California 4 North Carolina 5 Florida 5 Ohio 2 Georgia 4 Pennsylvania 9 Illinois 13 South Carolina 7 Kansas 1 Tennessee 3 Louisiana 2 Texas 4 Massachusetts 1 Vermont 1 Mississippi 1 Wisconsin 3