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given that n=31, xi=384.26, yi=3149.04, xiyi=37850.7762, ((xi)^2)=5099.2412, ((yi)^2)=309892.6548, 1 = 0.075691, 2=92.49859, SSE= 0.722351. Calculate: 1. coefficient of correlation. 2. 95% confidence interval for the

given that n=31, xi=384.26, yi=3149.04, xiyi=37850.7762, ((xi)^2)=5099.2412, ((yi)^2)=309892.6548, 1 = 0.075691, 2=92.49859, SSE= 0.722351. Calculate: 1. coefficient of correlation. 2. 95% confidence interval for the slope coefficient. 3. 95% confidence interval for the mean value of y when x=10. 4. 95% prediction interval for y when x=12

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