The Springfield Middle School sixth-grade teachers of history, science, and art are listed in the table.

Sixth Grade Teachers

History

Science

Art

Mr. Nelson

Ms. Porter

Mr. Rosenberger

Ms. Hogan

Mr. Grist

Ms. Patel

Ms. Miller

Ms. O’Reilly

Ms. George

Mr. Springer

Ms. Trufant

Ms. Callahan

Ms. Daniels

Mr. Pollard

Ms. Cartwright

Ms. Davis

Mr. Bergeron

Mr. Cooper

Mr. Chin

Mr. Dawson

Ms. Sarno

How many combinations of one history, one science teacher, and one art teacher include Mr. Bergeron?

13
36
252
288

17. a researcher measures three variables, x, y, and z for each individual in a sample of n = 20. the pearson correlations for this sample are rxy = 0.6, rxz = 0.4, and ryz = 0.7. a. find the partial correlation between x and y, holding z constant. b. find the partial correlation between x and z, holding y constant. (hint: simply switch the labels for the variables y and z to correspond with the labels in the equation.) gravetter, frederick j. statistics for the behavioral sciences (p. 526). cengage learning. kindle edition.