Mr. schmidt drives to work on two straight roads. one road is 6 1/3 miles long and the other road is 4 3/4 miles long. the roads are at right angles to each other. if a direct road were built between mr. schmidt and haworthorne, it would be 7 7/8 miles long. how many miles would this road save mr. schmidt each trip.

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.