A company sells widgets . The amount of profit , y, made by the company , is related to the selling price of each widget , x, by the given equation. Using this equation, find out what price the widgets should sold for , to the nearest cent for the company to make the maximum profit. Y= -5x^2 +222x -1510

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.