Please answer problem 2. An analyst was asked to predict the gross social benefits of building a public swimming pool in Dryville, which has a population of 50,000 people and a median household income of $40,000. The analyst identified 20 towns in the region that already had public swimming pools. She conducted a telephone interview with the recreation department in each town to find out what fee it charged per visit (FEE) and how many visits it had during the most recent summer season (VISITS). In addition, she was able to find each town’s population (POP) and median household income (INCOME) in the most recent census. The data are provided at the bottom of the question.
For question 1, use Excel and the data provided to estimate the regression coefficients for the equation
VISITS = a0 + a1*FEE + a2*INCOME + a3*POP
Question 1 Answer: VISITS = 151916.376 - 16921.188*FEE - 0.206*INCOME + 0.565*POP
For problem 2, use your answers to question 1 in combination with information on Dryville’s population and median household income to calculate the intercept and slope of the inverse demand curve for the Dryville pool and to calculate gross social benefit. The inverse demand curve is written as
FEE = b0 + b1*VISITS
What is the intercept of the inverse demand curve? (For your answer, include twodigits after the decimal point.)
b0 =
What is the slope of the inverse demand curve? (For your answer, include sixdigits after the decimal point.)
b1 =
What is the estimated gross social benefit of the Dryville public swimming pool project? (Do not include a comma or decimal point in your answer.)
GSB = $
Please upload a document showing your work (regression output, math calculations, and graphs) so I can assign partial and full credit as appropriate.
What is the intercept of the inverse demand curve? (For your answer, include twodigits after the decimal point.)
b0 = 2.20
What is the slope of the inverse demand curve? (For your answer, include sixdigits after the decimal point.)
b1 = -0.000009
What is the estimated gross social benefit of the Dryville public swimming pool project? (Do not include a comma or decimal point in your answer.)
GSB = $No info is given for this one.
Visits | Fee | Income | Population |
168590 | 0 | 20600 | 36879 |
179599 | 0 | 33400 | 64520 |
198595 | 0 | 39700 | 101123 |
206662 | 0 | 32600 | 103073 |
209995 | 0.25 | 38000 | 116592 |
172018 | 0.25 | 26700 | 49945 |
190802 | 0.25 | 20800 | 79789 |
197019 | 0.25 | 26300 | 98234 |
186515 | 0.5 | 35600 | 71762 |
152679 | 0.5 | 38900 | 40178 |
158056 | 0.5 | 37900 | 39031 |
157424 | 0.5 | 35100 | 44685 |
179490 | 0.5 | 35700 | 67882 |
164657 | 0.75 | 22900 | 69625 |
184428 | 0.75 | 38600 | 98408 |
174510 | 1 | 39300 | 98077 |
187820 | 1 | 25800 | 104068 |
196318 | 1.25 | 23800 | 117940 |
166694 | 1.5 | 34000 | 59757 |
161716 | 1.5 | 29600 | 88305 |
r² | 0.104 | |||||
r | -0.322 | |||||
Std. Error | 0.466 | |||||
n | 20 | |||||
k | 1 | |||||
Dep. Var. | Fee | |||||
ANOVA table | ||||||
Source | SS | df | MS | F | p-value | |
Regression | 0.45240909 | 1 | 0.45240909 | 2.08 | .1660 | |
Residual | 3.90696591 | 18 | 0.21705366 | |||
Total | 4.35937500 | 19 | ||||
Regression output | confidence interval | |||||
variables | coefficients | std. error | t (df=18) | p-value | 95% lower | 95% upper |
Intercept | 2.20 | |||||
Visits | -0.000009 | 0.00000631 | -1.444 | .1660 | -0.00002235 | 0.00000414 |
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