Use OLS to estimate consumption, with income, age and age squared as independent variables. a)If heteroskedasticity is present, describe two desirable properties of the OLS point estimates. b)Describe one desirable property that the OLS point estimates do not have. c)Briefly explain why OLS estimation does not provide valid confidence intervals or hypothesis tests.

In order to gauge public opinion about how to handle iran's growing nuclear program, a research group surveyed 1010 americans by telephone and asked them to rate the threat iran's nuclear program poses to the world on a scale of 1 to 10. describe the population, sample, population parameters, and sample statistics. identify the population in the given problem. choose the correct answer below.

Complete the sentences. upper a decrease in current income taxes the supply of loanable funds today because it a. decreases; increases disposable income, which decreases saving b. has no effect on; doesn't change expected future disposable income c. decreases; decreases expected future disposable income d. increases; increases disposable income, which encourages greater saving upper a decrease in expected future income a. increases the supply of loanable funds today because households with smaller expected future income will save more today b. has no effect on the supply of loanable funds c. decreases the supply of loanable funds because it decreases wealth d. decreases the supply of loanable funds today because households with smaller expected future income will save less today

In a small group, members have taken on the task roles of information giver, critic/analyzer, and recorder, and the maintenance roles of gatekeeper and follower. they need to fulfill one more role. which of the following would be most effective for their group dynamics? a dominator b coordinator c opinion seeker d harmonizer