Please help me and answer question 3. Thank you. The amount of water used by the

Question

Please help me and answer question 3. Thank you.

The amount of water used by the production facilities of a plant varies. Observations on water usage and other variables were collected for 18 months. The following model is fitted: E (USAGE) = A + | TEMP + M PROD+ A PAYR where the response variable is USAGE = monthly water usage (gallons/100) and the explanatory variables are TEMP PROD PAYR average monthly temperature ( amount of production number of people on the monthly plant payroll = = = The data are analyzed using SAS and the selected outputs have been made available in a separate sheet.

Explanation / Answer

If the first observation was removed and PROC REG was re run using the remaining observations, , the standard devation units would be reduce of regression coefficient for TEMP change. It can be shown by using the given table and also use the data.

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