Rajesh told Margaret that he ate half of the amount of cookies that josh ate. Margaret does not know how many cookies Josh ate. a. Using the variable c to represent the amount of cookies that josh ate, write an expression that represent s the amount of the cookies that Rajesh ate. b. If rajesh actually ate one more than half of the amount josh ate, write an expression that represents the amount of cookies Rajesh ate.

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.