Which of the following statements are accurate about the population regression model? (a) u_i is the stochastic component of Yi.
(b) a^ + B^Xi is the systematic component of Yi.
(c) Both (a) and (b) are correct.
(d) Neither (a) nor (b) are correct.

Option (A) is the only accurate statement about a population regression model.

Explanation:

Option A is the only correct answer because ui is the stochastic component of Yi.

On the other hand, option B is incorrect. It would only be correct for a sample regression model. This is because alpha (α) and beta (β) have hats or caps on them. The hat shows that they are estimated values (estimated from the given/measured population values for Y and X).

In this duo-variable (two-variable) regression model, ui without a cap is the stochastic component of Yi.

hi : ) i found this so i hope this !

"we first find value of tax in dollars.

the difference between the two prices   is: 23. 54 - 22 = 1.54

therefore the sales tax in dollars is 1.54

the tax % will be   (amount of tax / original cost price ) × 100

(1.54 / 22) × 100  → (0.07) × 100 =   7

so the tax rate is 7%

we can double check the answer.

7 % of 22   → (7/100) × 22 → 0.07 × 22 = 1.54

22 + 1.54 = 23.54"

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