Roger is having a picnic for 72 guests. he plans to serve each guest at least one hot dog. if each package, p, contains eight hot dogs, which inequality gives the minimum number of packages he will need to buy? a) p ≥ 9 b) p ≥ 6 c) p ≤ 6 d) p ≤ 9

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.