Section 8.6.2 reports data on the effects of consuming alcohol on three different occasions. Using the data for group 1, suppose it is desired to predict the response at time 1 using the responses at...

Section 8.6.2 reports data on the effects of consuming alcohol on three different occasions. Using the data for group 1, suppose it is desired to predict the response at time 1 using the responses at times 2 and 3. Test H₀: β₁
= β₂
= 0 using the S-PLUS function regtest and βˆ
_m.

For the data in Exercise 1, test H₀: β₁
= 0 with the functions regci and regtest. Comment on the results.