Suppose that n = 424 i.i.d. observations for left parenthesis Upper Y Subscript i Baseline comma Upper X Subscript i right parenthesis yield the following regression results: ModifyingAbove Upper Y with caret equals 31.06 plus 69.71 Upper X comma SER equals 15.33 comma Upper R squared equals 0.74 (16.4) (12.7) Another researcher is interested in the same regression, but he makes an error when he enters the data into the regression: He enters each observation twice, so he has 848 observations (with observation 1 entered twice, observation 2 entered twice, and so forth)