ECONOMICS W/CONNECT+20  >C<
ECONOMICS W/CONNECT+20 >C<
20th Edition
ISBN: 9781259714993
Author: McConnell
Publisher: MCG CUSTOM
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Chapter 3, Problem 3P

Subpart (a):

To determine

Shortage or surplus.

Given information:

Table 1 shows the demand for bushels and supply of bushels:

Thousands of bushels demanded

Price

Thousands of bushels supplied Shortage or surplus
85 3.4 72 ­­­­­-
80 3.7 73 -
75 4 75 -
70 4.3 77 -
65 4.6 79 -
60 4.9 81 -

Subparts (b):

To determine

Shortage or surplus.

Given information:

Table 1 shows the demand for bushels and supply of bushels:

Thousands of bushels demanded

Price

Thousands of bushels supplied Shortage or surplus
85 3.4 72 ­­­­­-
80 3.7 73 -
75 4 75 -
70 4.3 77 -
65 4.6 79 -
60 4.9 81 -

Subparts (c):

To determine

Shortage or surplus.

Given information:

Table 1 shows the demand for bushels and supply of bushels:

Thousands of bushels demanded

Price

Thousands of bushels supplied Shortage or surplus
85 3.4 72 ­­­­­-
80 3.7 73 -
75 4 75 -
70 4.3 77 -
65 4.6 79 -
60 4.9 81 -

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Suppose that a random sample of 216 twenty-year-old men is selected from a population and that their heights and weights are recorded. A regression of weight on height yields Weight = (-107.3628) + 4.2552 x Height, R2 = 0.875, SER = 11.0160 (2.3220) (0.3348) where Weight is measured in pounds and Height is measured in inches. A man has a late growth spurt and grows 1.6200 inches over the course of a year. Construct a confidence interval of 90% for the person's weight gain. The 90% confidence interval for the person's weight gain is ( ☐ ☐) (in pounds). (Round your responses to two decimal places.)
Suppose that (Y, X) satisfy the assumptions specified here. A random sample of n = 498 is drawn and yields Ŷ= 6.47 + 5.66X, R2 = 0.83, SER = 5.3 (3.7) (3.4) Where the numbers in parentheses are the standard errors of the estimated coefficients B₁ = 6.47 and B₁ = 5.66 respectively. Suppose you wanted to test that B₁ is zero at the 5% level. That is, Ho: B₁ = 0 vs. H₁: B₁ #0 Report the t-statistic and p-value for this test. Definition The t-statistic is (Round your response to two decimal places) ☑ The Least Squares Assumptions Y=Bo+B₁X+u, i = 1,..., n, where 1. The error term u; has conditional mean zero given X;: E (u;|X;) = 0; 2. (Y;, X¡), i = 1,..., n, are independent and identically distributed (i.i.d.) draws from i their joint distribution; and 3. Large outliers are unlikely: X; and Y, have nonzero finite fourth moments.
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