8.6) Consider the following data on x = rainfall volume (m3) and y = runoff volu

Question

8.6)

Consider the following data on x = rainfall volume (m3) and y = runoff volume (m3) for a particular location. x 6 12 14 16 23 30 40 49 55 67 72 82 96 112 127 y 4 10 13 14 15 25 2744 38 46 53 67 82 99 102 Use the accompanying Minitab output to decide whether there is a useful linear relationship between rainfall and runoff. The regression equation is runoff = -1.87 + 0.833 rainfall Predictor Constant Coef -1.869 stdev t-ra rainfall s-4.609 2.087 0.83275 0.03212 -0.90 25.93 =98.0% 0.387 0.000 R-sq 98.1% R-sq(adj ) -

Explanation / Answer

From the given output,

t = 25.93

P-value = 0.00

Reject Ho; Option A is correct.

95% confidence interval: (0.763, 0.902) m3

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