If Xit is correlated with Xis for different values of s and t, then: a. Xit is said to be autocorrelated
b. the OLS estimator cannot be computed
c. statistical inference cannot proceed in a standard way even if clustered standard errors are used
d. this is not of practical importance since these correlations are typically weak in applications

1) u.s. real gdp is substantially higher today than it was 60 years ago. what does this tell us, and what does it not tell us, about the well-being of u.s. residents? what are the limitations of the gdp as a measure of economic well-being? given the limitations, why is gdp usually regarded as the best single measure of a society’s economic well-being? 2) what is an intermediate good? how does an intermediate good differ from a final good? explain why it is the case that the value of intermediate goods produced and sold during the year is not included directly as part of gdp, but the value of intermediate goods produced and not sold is included directly as part of gdp.

Dakota products has a production budget as follows: may, 16,000 units; june, 19,000 units; and july, 24,000 units. each unit requires 3 pounds of raw material and 2 direct labor hours. dakota desires to keep an inventory of 10% of the next month’s requirements on hand. on may, 1 there were 4,800 pounds of raw material in inventory. direct labor hours required in may would be:

What’s the present value of a perpetuity that pays $250 per year if the appropriate interest rate is 5%? $4,750 $5,000 $5,250 $5,513 $5,788what is the present value of the following cash flow stream at a rate of 8.0%, rounded to the nearest dollar? cash flows: today (t = 0) it is $750, after one year (t = 1) it is $2,450, at t = 2 it is $3,175, and at t=3 it is $4,400. draw a time line. $7,917 $8,333 $8,772 $9,233 $9,695