i. ii. (a) Explain the following terms. The Gauss Markov Theorem Type I and Type II Errors iii. Sampling Distribution of iv. Variance inflation factor 1313 (b) A labour economist is interested in estimating determinants of labour force participation for females in 55 cities. He estimates the following equation (P-values in parenthesis): LFF UNEMP LFF = 47.6-0.36 UNEMP-0.084SCH (0.042) (0.0001) = percent labour force participation (females aged 25 to 54) in the ith city = percent unemployment rate in the ith city = average schooling completed (years) in the ith city SCH i. Interpret the estimated coefficients of UNEMP and SCH. (2) ii. Comment on the following statement: "These results are not BLUE because the estimated coefficient of SCH is wrong. It has an unexpected sign". Do you agree or disagree? (4)