If other factors are held constant, what happens to a confidence interval if the sample variance increases?

a. the standard error increases and the width of the interval increases.
b. the range of t scores increases and the width of the interval increases.
c. the standard error decreases and the width of the interval decreases.
d. the range of t scores decreases and the width of the interval decreases.

The cost of capital: introduction the cost of capital: introduction companies issue bonds, preferred stock, and common equity to aise capital to invest in capital budgeting projects. capital is』necessary factor of production and like any other factor, it has a cost. this cost is equal to the select the applicable security. the rates of return that investors require on bonds, preferred stocks, and common equity represent the costs of those securities to the firm. companies estimate the required returns on their securities, calculate a weighted average of the costs of their different types of capital, and use this average cost for capital budgeting purposes. required return on rate: when calculating om operations when the firm's primary financial objective is to select shareholder value. to do this, companies invest in projects that earnselect their cost of capital. so, the cost of capital is often referred to as the -select -select and accruals, which a se spontaneously we hted average cost of capital wa c our concern is with capital that must be provided by select- 쑤 interest-bearing debt preferred stock and common equity. capital budgeting projects are undertaken, are not included as part of total invested capital because they do not come directly from investors. which of the following would be included in the caculation of total invested capital? choose the response that is most correct a. notes payable b. taxes payable c retained earnings d. responses a and c would be included in the calculation of total invested capital. e. none of the above would be included in the cakulation of total invested capital.

As a result of a labeling mistake at the chemical factory, a farmer accidentally sprays weedkiller rather than fertilizer on half her land. as a result, she loses half of her productive farmland. if the property of diminishing returns applies to all factors of production, she should expect to seea. a decrease in the marginal productivity of her remaining land and an increase in the marginal productivity of her labor. b. an increase in the marginal productivity of her remaining land and an increase in the marginal productivity of her labor. c. an increase in the marginal productivity of her remaining land and a decrease in the marginal productivity of her labor. d. a decrease in the marginal productivity of her remaining land and a decrease in the marginal productivity of her labor.

Bruce matthews played football for the tennessee titans. as part of his contract, he agreed to submit any dispute to arbitra- tion. he also agreed that tennessee law would determine all matters related to workers' compensation. after matthews retired, he filed a workers' compensation claim in california. the arbitrator ruled that matthews could pursue his claim in california but only under tennessee law. should this award be set aside?