Department of Economics Spring 2011

University of California Prof. Woroch

                          Economics 140: FIRST MIDTERM EXAM

                                 SUGGESTED ANSWERS

I. TRUE/FALSE/UNCERTAIN: Below are 3 statements that may be true or false, or possibly

ambiguous. State which one you believe to be the case, and more importantly, give a detailed

but concise explanation for your answer. Each question is worth 10 points for a total of 30.

1. Below is the Excel statistical function output for a t-test of the difference in the mean wages using a

   random sample of union and non-union factory workers.

      t-Test:...