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Hwk8FinDrtSp06 - H ADM 201 Homework VIII Due Friday 2:00 pm...

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H ADM 201: Homework VIII Due Friday, April 21, 2006, 2:00 pm Name:_____________________________________________ Please check your recitation section in the space provided below : H ADM 201, Section 1. (Mondays 4:40 PM: Michelle Tong) H ADM 201, Section 2. (Mondays 7:40 PM: Michelle Tong) H ADM 201, Section 3. (Tuesdays 4:40 PM: Melanie Pope) H ADM 201, Section 4. (Tuesdays 7:40 PM: Melanie Pope) This cover page must be stapled to the homework you turn in. It is the front page of your homework. Make sure to fill out the information requested above. GRADING SHEET MAXIMUM SCORE SCORE EARNED
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H ADM 201 Homework VIII Spring 2006 Question 1. The following question is designed to give you a better understanding of how regression works and how to use and interpret the regression output from Minitab. Imagine that you want to predict the number of walk-ins each night based on the number of canceled flights before 6:00PM at the local airport. Observation Number of Walk-ins Number of Canceled Flights Before 6:00PM 1 3 18 2 5 22 3 8 26 4 14 31 Please SHOW ALL of your work clearly and by hand. It is perfectly appropriate to use Minitab to check your answers. (STAT >REGRESSION > REGRESSION) a. Is this a regression problem or a correlation problem? Explain in two sentences or less. If a regression problem, explicitly define the predictor variable and the response variable. b. Compute and interpret the slope of this linear regression, using the formula = = - - - = 4 1 2 4 1 1 ) ( ) )( ( i i i i i x x y y x x b . (Or you may use the computational formula.) c. Compute and interpret the intercept of the estimated regression equation using the formula x b y b o 1 - = . Is the interpretation of this parameter realistic given the
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