Question

When coastal power stations take in large quantities of cooling water, it is inevitable that a number of fish are drawn in with the water. Various methods have been designed to screen out the fish. A particular article examined intake fish catch at an English power plant and several other variables thought to affect fish intake. y = fish intake (number of fish) x1 = water temperature (°C) x2 = number of pumps running x3 = sea state (values 0, 1, 2, or 3) x4 = speed (knots) Part of the data given in the article were used to obtain the estimated regression equation(based on n = 26). SSRegr = 1486.1 and SSResid = 2230.9 were also calculated.

(a) What proportion of observed variation in fish intake can be explained by the model relationship? (Round your answer to four decimal places, if needed.) R2 =

(b) Estimate the value of σ. (Round your answer to three decimal places, if needed.) se =

(c) Calculate adjusted R2. (Round your answer to four decimal places, if needed.) Adjusted R2 = Adjusted R2 R2.

Answer 1