What is the difference between a need and want?

Which of the following best explains how the invention of money affected the barter system? a. the invention of money supplemented the barter system by providing a nonperishable medium of exchange b. the invention of money completely replaced the barter system with a free-market system c. the invention of money had no effect on the barter system d. the invention of money drastically reduced the value of goods used in the barter system 2b2t

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.

Which of the following differentiates cost accounting and financial accounting? a. the primary users of cost accounting are the investors, whereas the primary users of financial accounting are the managers. b. cost accounting measures only the financial information related to the costs of acquiring fixed assets in an organization, whereas financial accounting measures financial and nonfinancial information of a company's business transactions. c. cost accounting measures information related to the costs of acquiring or using resources in an organization, whereas financial accounting measures a financial position of a company to investors, banks, and external parties. d. cost accounting deals with product design, production, and marketing strategies, whereas financial accounting deals mainly with pricing of the products.