A multinational corporation completed an analysis to model weekly sales, in dollars, using average production work hours per week. To present their work to pundits in Germany, they must convert the currency to the euro: €1 equaled $1.20 at the time of the analysis.
a) Explain the impact, if any, the change of currency will have on b₁.
b) Explain the impact, if any, the change of currency will have on r.
c) Why can we say that the change of currency will not affect the results of a t-test.