round answers to four decimal places. a) write the equation of the best-fit line.y^=?b) identify the correlation coefficient. c) what fraction of variability in heights can be explained using the linear model of height versus wrist circumference?coefficient of determination: ?d) use the equation of the best-fit line to predict the height of a person with a wrist circumference of 6 inches. = ? inches e) One of the points on the scatterplot is (7.3,82.2). calculate the residual for this point, hint: y-y^=? inches g) when predicting heights, what is a "typical" error using this linear model? standard error of estimate: ? inches

Body frame size is determined by a person's wrist circumference in relation to height. A researcher measures the wrist circumference and height of a random sample of individuals. The data is displayed below. 85 80 75 Height (in) 70 65 60 5-35 6 65 7 75 8 85 9 Wrist Circumference (in) Q Excel Output: Regression Statistics Multiple R 0.7174 R Square 0.5146 Adjusted R 0.4984 Square Standard Error 4.8082 Observations 32 Coefficients Standard Error t-Stat P-value (Intercept) 30.8448 7.1116 , 4.3373 0.00015 wrist 5.6358 0.9993 5.6399 3.83 E -6