Requesting answers for d, e and f. 1. The number of pounds of steam used per month by a chemical plant is thought to be related to the average ambient temperature (in F) for that month. The past year’s usage and temperatures are in the following table: Month Temp Usage/1000 Month Temp Usage/1000 Jan 21 185.79 Jul 68 621.55 Feb 24 214.47 Aug 74 675.06 Mar 32 288.03 Sept 62 562.03 Apr 47 424.84 Oct 50 452.93 May 50 454.58 Nov 41 369.95 Jun 59 539.03 Dec 30 273.98 d. Suppose that the monthly average temperature is 47 F. Calculate the fitted value of y and the corresponding residual. e. Test for significance of regression using α=0.01 (Use ANOVA). f. Calculate the r2 of the model and also find a 99% CI for β1.

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Requesting answers for d, e and f.

1. The number of pounds of steam used per month by a chemical plant is thought to be related to the average ambient temperature (in F) for that month. The past year’s usage and temperatures are in the following table:

Month Temp Usage/1000 Month Temp Usage/1000
Jan 21 185.79 Jul 68 621.55
Feb 24 214.47 Aug 74 675.06
Mar 32 288.03 Sept 62 562.03
Apr 47 424.84 Oct 50 452.93
May 50 454.58 Nov 41 369.95
Jun 59 539.03 Dec 30 273.98

d. Suppose that the monthly average temperature is 47 F. Calculate the fitted value of y and the corresponding residual.

e. Test for significance of regression using α=0.01 (Use ANOVA).

f. Calculate the rof the model and also find a 99% CI for β1.

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