Can you help me to solve it? Thank you.

1. Suppose you want estimate the following model y=o+if+u Assume the model satised at least the four Gauss-Markove assumptions. as\" is not observed, i w In in w , i . at It r in p pu i ni nstead e use a eas e of * call t J: The mess ement e o the 0 lat o s e 2 a: as" (a) What is the classical errors in variables (CEV) assumption? (b) Suppose (CEV) holds, and you want estimate the following model using OLS y = *m + 719: + v Is 771 biased, show your work? (c) Now suppose that x' is observable but the outcome 3; is measured with error. Are OLS estimates biased in this casemake sure to support your answer by providing the relevant assumptions about the measurement error in y