Roger is considering making a $6,000 investment in a venture that its promoter promises will generate immediate tax benefits for him. roger, who does not anticipate itemizing his deductions, is in the 30% marginal income tax bracket. if the investment is of a type that produces a tax credit of 40% of the amount of the expenditure, by how much will roger's tax liability decline because of the investment?

The usa today reports that the average expenditure on valentine's day is $100.89. do male and female consumers differ in the amounts they spend? the average expenditure in a sample survey of 47 male consumers was $135.67, and the average expenditure in a sample survey of 38 female consumers was $68.64. based on past surveys, the standard deviation for male consumers is assumed to be $34, and the standard deviation for female consumers is assumed to be $17.