I'm working on a statistics question and need support to help me learn.
A regression analysis carried out to relate y=repair time for a water filtration system (hr) to x1=elapsed time since the previous service (months) and x2=type of repair (1 if electrical and 0 if mechanical) yielded the following model based on n=12 observations: y=0.950+0.4x1+1.25x2. In addition, SST=10, SSE=2.09. The value of R^2 adjusted equals