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a) Explain what is calculated by a correlation coefficient.b) Why do economists commonly find regression a more useful tool than correlation?c) In a sample of 102 men the correlation among age and monthly donations to charity is found to be 0.2.Test whether this correlation is significantly among from zero and comment on your result.
In the United States, a buyer of a new electric is eligible for a one-time federal income tax credit of up to $4,000. Show the effect of this tax credit graphically, assuming the $
How to test the linear regression?
David has £5000 that he wishes to save for six years. Bank A offers him an interest rate of 4% per annum compounded monthly. Bank B offers him an interest ra
Ask question #Minimum unions tie the hand of management and inhibit efficient decision making100 words accepted#
The equilibrium conditions for three related markets are given by: (a)Write this system of equations in matrix notation of the form Ax = B. (b) Find the determinant
Regression Analysis
Determine the four stationary points of the function Z= 2x 3 +y 3 -18x -12y +50 according to whether they define a maximum, minimum, or saddle point.
Consider the following short run production function. Q 0 15 35 60 90 115 135 150 16
Calculate the incremental profit Electron Control would earn by customizing its instruments and marketing directly to end users.
An electron follows a helical path in a uniform magnetic field of magnitude 0.422T. The pitch of the path is 6.81 mm, and the magnitude force on the electron is 1.59 x 10 -15 N. W
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