The relationship between two variables, x and y, is depicted graphically below. Based on the scatter plot, we can conclude the following about the value of the linear correlation coefficient r. a) r 1 b) r -1 c) r .8 d) r -.8 e) r Which of the probability distributions, depicted graphically below by probability histograms, could be best modeled by the normal probability distribution? a) b) c) d) e) None of these 0