## Question

###### We are in the same world as Question 26: w is randomized conditionally on a continuous 11 and the treatment effect is constant: In addition, Ely(0)x1] = a + Y181 + Y2w2 However; you ran a regression y = & + TW + Y1*1 + & instead ofy = a + Tw + 3181 + Y2x2 + u . Show that MLR4 does not hold when you run a regression ofy on a constant; W, and 11 _

We are in the same world as Question 26: w is randomized conditionally on a continuous 11 and the treatment effect is constant: In addition, Ely(0)x1] = a + Y181 + Y2w2 However; you ran a regression y = & + TW + Y1*1 + & instead ofy = a + Tw + 3181 + Y2x2 + u . Show that MLR4 does not hold when you run a regression ofy on a constant; W, and 11 _

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