Raw material for fiber production is stored in a place for which there is no humidity control. However, the humidity of the storage room (;) affects the moisture content (y; ) of the fiber that is being produced. Six sets of (i, i) data were taken and the regression model is yi,hat = -2.17 + 0.297xi . The SSE value is 8.468, bar = 46.667 and Ser = 419.333. Compute the 95% confidence interval for the prediction yi,hat at x; = 50.000. Lower: Upper