Consider the economy of freeland, whose overall actual price index and actual output are p and y respectively, and the natural rate of output is ˉ y . there are two types of firms in freeland: firms with flexible prices, which set prices according to p = p + 0.5(y − ˉ y ); and firms with sticky prices, which set prices base on p = pe (the expected overall price index). also the fraction of firms with sticky prices is s = 0.75.

Dr. sperry, a biologist, is using excel to track growth rates of different populations of bacteria. she has a very complex formula in one cell. it begins with “round”. dr. sperry would like to see exactly how excel’s calculation reached the final rounded value that she sees in the cell. what could dr. sperry do to best understand how the calculation was made? try different formulas on her own until she reaches the value shown in excel click on the evaluate formula button in the formulas tab and then click “step in” select the cell and then look at the formula in the formula field of the ribbon remove “round” from the formula in order to see the actual value before rounding