The following data represent the actual heights and weights referred to in Chapter 9 for male college students.

Height Weight Height Weight 70 150 73 170 67 140 74 180 72 180 66 135 75 190 71 170 68 145 70 157 69 150 70 130 71.5 164 75 185 71 140 74 190 72 142 71 155 69 136 69 170 67 123 70 155 68 155 72 215 66 140 67 150 72 145 69 145 73.5 160 73 155 73 190 73 155 69 155 71 150 73 165 68 155 72 150 69.5 150 74 190 73 180 72 195 75 160 71 138 66 135 74 160 69 160 72 155 66 130 70 153 73 155 67 145 68 150 71 170 74 148 72 175 73.5 155 69 175

(a) Make a scatterplot of the data.

(b) Calculate the regression equation of weight predicted from height for these data.
Interpret the slope and the intercept.

(c) What is the correlation coefficient for these data?

(d) Are the correlation coefficient and the slope significantly different from zero?