MICROECONOMICS
MICROECONOMICS
11th Edition
ISBN: 9781266686764
Author: Colander
Publisher: MCG
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Chapter 2.A, Problem 7QE

(a)

To determine

Demonstrate the equation when the slope changes.

(b)

To determine

Demonstrate the shift in curve in the equation.

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Draw the graph of U = q1 + aq2 and U= q1^2 + q2^2. Interpret the parameter and shape of the curve.
1. Solve the following problem by using Excel for graph sketching. A soda vendor at Louisiana State University football games observes that more sodas are sold the warmer the temperature at game time is. Based on 32 home games covering five years, the vendor estimates the relationship between soda sales and temperature to be y = -240 + 8x, where y = the number of sodas she sells and .x = temperature in degrees Fahrenheit, (a) Interpret the estimated slope and intercept. Do the estimates make sense? Why, or why not? (b) On a day when the temperature at game time is forecast to be 80°F, predict how many sodas the vendor will sell. (c) Below what temperature are the predicted sales zero? (d) Sketch a graph of the estimated regression line.
Calculate the slope and vertical intercept of the line that goes through the points described in the table below. 9 9 X y 0 72 vertical intercept = slope = 1 65 2 58 3 51 4 44 5 37 6 30 7 23 8 16
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