14. Which of the following assumptions must be made in order to use the pooled least squares estimator, but is relaxed in the cluster robust model? a.) E(e) = 0 b.) var(et) = E(e?it) = s² c.) covleit, ejs) = E(ejt, ejs) = 0 for i j or tt s d.) cov(eit, X2it) = 0, cov(ejt, X3it)

Q: -48 6

A:

Q: factors of 24 that add up to 10

A: factors of 24 that add up to 10

Q: 6/4 - 2/4

A: Explanation and solutions is given below.....

Q: Write the binomial expansion for (x + 2)°. (x+ 2)° =D

A:

Q: Find the term indicated in the expansion (x + 2y)6; third term.

A: Find the term indicated in the expansion (x + 2y)6; third term.

Q: 50/21 simplest form

A: Compute the simplest form of 50/21.That is, divide 50 by 21.

Q: 1 3] [1 3 3 0 -1 2. 30 2

A:

Q: 1/5 + 1/10 + 1/15

A: Sum of numbers

Q: Find the coefficient of x8 y18  in the expansion of (1x2  -4y6)7

A:

Q: 8) Expand the following binomial expression: (x² - 3)4.

A: o expand the binomial expression (x² - 3)^4, we can use the binomial theorem which states that: (a +…