Question: 2. Using the salary data of the previous problem, one fitted mean function is E(salary sex, year) = 18223 571 sex + 741 year +

2. Using the salary data of the previous problem,

2. Using the salary data of the previous problem, one fitted mean function is E(salary sex, year) = 18223 571 sex + 741 year + 169 sex x year (a) Give the coefficients in the estimated mean function if sex were coded so that males had the value 2 and females had the value 1 (the coding given to get the mean function above was 0 for males and 1 for females). (b) Give the estimated coefficients if sex were coded as -1 for males and +1 for females

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