An experiment was conducted to determine if the weight of an animal can be predicted after a given period of time on the basis of the initial weight of the animal and the amount of feed that was eaten. The following data, measured in kilograms, were recorded: Final Initial Feed Weight, y Weight, x1 Weight, x2 95 77 80 100 97 70 50 80 92 84 42 33 33 45 39 36 32 41 40 38 272 226 259 292 311 183 173 236 230 235 (a) Fit a multiple regression equation of the form Y|x1,x2 = 0 + 1x1 + 2x2. (b) Predict the nal weight of an animal having an initial weight of 35 kilograms that is given 250 kilograms of feed.
Tuesday, April 11 h • Example 5: Smiles and Leniency (skip for today) A study examined the effect of a smile on the leniency of disciplinary action for wrongdoers. Participants in the experiment took on the role of members of a college disciplinary panel judging students accused of cheating. For each accused student, along with a description of the offense, a picture was provided with either a smile (n = 34)1 or a neutral facial expression (n = 34). A leniency