Use the following information to solve questions 5-10. A farmer is interested in determining the effect of fertilizer use, water use, and natural disaster on his corn yield. He estimates a regression and obtains the following results: yield = 23 +3.2fertilizer + 2.1water - 6.5storm In the equation, fertilizer is measure in lb/acre, water is measured in gallons/acre, yield is measured in bu/acre, and the variable storm is a dummy variable that takes the value I if a storm happens and 0 if a storm does not happen. 5. What is the effect of fertilizer on yield? a. If fertilizer use increases by 11b/acre then yield will increase by 3.2bu/acre b. If fertilizer use increases by 11b/acre then yield will decrease by 3.2 bu/acre c. If fertilizer use increases by 11b/acre then yield will increase by 23 bulacre d. If fertilizer use increases by 11b/acre then yield will decrease by 23 bu/acre e. If fertilizer use increases by 11b/acre then yield will increase by 23 + 3.2 = 26.2 bu/acre f. If fertilizer use increases by 11b/ cre then yield will decrease by 23 +3.2 = 26.2 bu/acre 6. What is the effect of water on yield? a. If water use decreases by 1 gallons/acre yield will increase by 2.1 bu/acre b. If water use decreases by 1 gallons/acre yield will decrease by 2.1 b/acre c. If water use decreases by 1 gallons/acre yield will increase by 23 bu/acre d. If water use decreases by 1 gallons/acre yield will decrease by 23 bu/acre e. If water use decreases by 1 gallons/acre yield will increase by 23 +2.1-25.1 bu/acre f. If water use decreases by 1 gallons/acre yield will decrease bu/acre 7. What is the effect of a storm on yield? a. If a storm happens then yield will increase by 6.5 bulacre b. If a storm happens then yield will decrease by 6.5 bulacre c. If a storm happens then yield will increase by 23 bu/acre d. If a storm happens then yield will decrease by 23 bu/acre e. If a storm happens then yield will increase by 23 +6,5 - 29.5 bu/acre f. If a storm happens then yield will decrease by 23 +6.5 29.5 bu/acre 8. What would the yield be equal to if the farmer does not use water nor fertilizer and does not experience a storm? a. 23 b. 16.5 c. 19.8 d. 20.9 9. What would the yield be equal to if the farmer does not use water nor fertilizer and experiences a storm? a. 23 b. 16.5 c. 19.8 d. 20.9 e. 6.5 10. What would the yield be equal to if the farmer uses 10 gallons/acre of water, 5 lb/acre fertilizer, and does not experience a storm? a. 60 b. 54 c. 55.5 d. 53.5 e. 45.5
