In a study of protein synthesis in the oocyte (developing egg cell) of the frog Xenopus laevis, a biologist injected individual oocytes with radioactively labeled leucine. At various times after injection, he made radioactivity measurements and calculated how much of the leucine had been incorporated into protein. The results are given in the accompanying table; each leucine value is the content of labeled leucine in two oocytes. All oocytes were from the same female.13

(a) Plot the data. Does there appear to be a relationship between X and V? Is it linear or nonlinear? Weak or strong?
(b) Use linear regression to estimate the rate of incorporation of the labeled leucine.
(c) Draw the regression line on your graph.
(d) Calculate the residual standard deviation.

Time Lcucine 0 10 20 30 40 50 60 30.00 160 0637 0.02 0.25 0.54 0.69 107 50 1.74 0.830 Mean SD r0.993 SS(resid) 0.035225