When Joanne saw a television ad for a large retail chain of jewelry stores, she was impressed with the money-back guarantee that the company offered on its jewelry. However, when she later heard an identical audio portion of the ad on the radio, she was unimpressed with the guarantee. This differing perception of ads as a result of the medium in which they appear is caused by the effect

Agood for which demand increases as income rises is and a good for which demand increases as income falls is

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.

The strength of the economy depends on the balance pf production and consumption of goods and consumption of goods and services