As reported in the chapter, quarterly revenue (in billions ofdollars) for Nike is estimated as R = 3.820+0.139t+0.168Upper D 1 +0.482Upper D 2+0.594 Upper D 3, where t is a time trend, Upper D1 is a dummy variable indicating the year\\\'s first quarter, Upper D2 is a dummy variable indicating the second quarter, and Upper D3 is a dummy variable indicating the third quarter.

What does this estimation tell us about first-quarter revenues for Nike compared to the revenue in the fourth quarter?

All else equal, in the first quarter, did Nike\\\'s revenues decrease? remain unchanged? or increase? relative to revenues in the fourth quarter.