The difference between a roth ira and a traditional ira is that in a roth ira taxes are paid on the income that is contributed but the withdrawals at retirement are tax-free. in a traditional ira, however, the contributions reduce your taxable income, but the withdrawals at retirement are taxable. assume you plan to devote $5,000 to retirement savings in each year. you will retire in 30 years and expect to live for an additional 20 years after retirement. a. assume the before-tax interest rate is 5%. what will be your after-tax 20-year retirement consumption stream if you choose to save in a traditional ira? assume your tax rate is fixed at 30%. (round your answers to 2 decimal place.)

Acompany is developing a new high­performance wax for cross country ski racing. in order to justify the price marketingwants, the wax needs to be very fast. specifically, the mean time to finish their standard test course should be less thanseconds for a former olympic champion. to test it, the champion will ski the course 8 times. the champion's times(selected at random) are 59.9 61.9 48.8 52.2 46.6 45.3 50.6 and 41.1 seconds to complete the test course. complete parts a and b below.a) should they market the wax? assume the assumptions and conditions for appropriate hypothesis testing are metfor the sample.assume=0.05. what are the null and alternative hypotheses? choose the correct answer below.b) suppose they decide not to market the wax after the test, but it turns out that the wax really does lower the champion'saverage time to less thanseconds. what kind of error have they made? explain the impact to the company of such anerror.

Marta communications, inc. has provided incomplete financial statements for the month ended march 31. the controller has asked you to calculate the missing amounts in the incomplete financial statements. use the information included in the excel simulation and the excel functions described below to complete the task

The purchasing agent for a company that assembles and sells air-conditioning equipment in a latin american country noted that the cost of compressors has increased significantly each time they have been reordered. the company uses an eoq model to determine order size. what are the implications of this price escalation with respect to order size? what factors other than price must be taken into consideration?