The accompanying table provides data for the sex, age, and weight of bears. For sex, let 0 represent female and let 1 represent male. Letting the response (y) variable represent weight, use the dummy variable of sex and the variable of age and to find the multiple regression equation. Use the equation to find the predicted weight of a bear with the characteristics given below. Does the weight of a bear seem to significantly between different sexes?

a. Female bear that is 25 months of age

b. Male bear that is 25 months of age

\begin{tabular}{ccc} Sex (1 = M) & Age (Months) & Weight \\ Question Viewer & 18 & 81 \\ \hline 1 & 58 & 352 \\ 1 & 78 & 426 \\ 1 & 118 & 347 \\ 0 & 104 & 157 \\ 0 & 98 & 229 \\ 1 & 53 & 253 \\ 1 & 53 & 361 \\ 0 & 57 & 205 \\ 0 & 56 & 138 \\ 1 & 70 & 322 \\ 1 & 5 & 34 \\ 0 & 43 & 150 \\ 1 & 31 & 172 \\ 0 & 19 & 114 \\ 1 & 34 & 173 \\ 1 & 43 & 212 \\ 0 & 12 & 21 \\ 1 & 21 & 116 \end{tabular} \begin{tabular}{ccc} 1 & 179 & 430 \\ Question Viewer & 57 & 130 \\ 0 & 81 & 142 \\ 1 & 24 & 98 \\ 1 & 10 & 39 \\ 1 & 48 & 216 \\ 1 & 9 & 52 \\ 1 & 31 & 145 \\ 0 & 57 & 108 \\ 0 & 44 & 181 \\ 1 & 19 & 152 \\ 1 & 12 & 68 \\ 0 & 80 & 348 \\ 0 & 67 & 308 \\ 1 & 9 & 96 \\ 1 & 9 & 91 \\ 1 & 34 & 149 \\ 1 & 37 & 272 \\ 1 & 37 & 202 \\ 0 & 59 & 211 \end{tabular} \begin{tabular}{ccc} 1 & 56 & 370 \\ 1 & 14 & 72 \\ 1 & 23 & 147 \\ 1 & 71 & 436 \\ 0 & 11 & 61 \\ 0 & 81 & 235 \\ 1 & 32 & 217 \\ 1 & 16 & 53 \\ 1 & 13 & 60 \\ 1 & 14 & 105 \\ 0 & 18 & 72 \\ 0 & 18 & 55 \\ 0 & 10 & 25 \\ 1 & 80 & 512 \\ 1 & 18 & 148 \\ Sex (1 = M) & Age (Months) & Weight \end{tabular} Does sex appear to have much of an effect on the weight of a bear? Select the correct choice and fill in the answer box to complete your choice (Round to'one decimal place as needed.) Find the multiple regression equation with weight as the response variable and the dummy variable of sex and the variable of age as the explanatory variables. Weight =+1 Sex +1 Age (Round to one decimal place as needed.) The predicted weight for the female bear is pounds. (Round to the nearest integer as needed.) Predict the weight of a male bear that is 25 months of age The predicted weight for the male bear is pounds. (Round to the nearest integer as needed.)