Let X be the price for a pack of paper
<span>Let Y be the price for a box of pencils. </span>
<span>1) X * 3 packs + Y * 3 boxes = $3.25 </span>
<span>2) X * 2 packs + Y * 1 box = $2.00 </span>
<span>Re-arranging equation 2) gives you Y = ($2.00 - X * 2 packs) / 1 box </span>
<span>Subsitute Y for the Y term in equation X. Multiply through the bracket, collect like terms and solve for X. Then you can use either equation to solve for Y (if you don't get the same answer, you've made a mistake).</span>
Heteroscedastic residuals will have roughly the same variance for any value of X. Hence:
The correct option is C.
Hetero means that they are different/vary. Homoscedastic would mean that they do not change as the value of x changes.
When the variance of the residuals is uneven throughout a range of measured values, this is referred to as heteroskedasticity. The analysis results may be flawed if heteroskedasticity is present and the population employed in the regression has unequal variance.
One presumption regarding the residuals/errors in OLS regression is that they have the same, but unmeasured, variance. The term "constant variance" or "homoscedasticity" refers to this. Heteroscedasticity is the issue when this presumption is broken.
Hence we get the required answer.
Learn more about Homoscedastic here:
brainly.com/question/14974535
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Answer:
replace x with each of the value then solve for the value
Step-by-step explanation:
when raised to the power of a negative you do the inverse
2^-2 = 2^1/2
By factoring x^3-64 put you should get the second option as your answer
(x-4)(x^2+4x+16)
