When technology advances, which of the following always takes place? a. devices are designed b. efficiency is achieved c. results are improved d. inventions are made

The chart shows the pricing history for two items. which person saved the most money by buying a product at the right time? carrie, who waited six months to buy a game system timothy, who bought a game system right away because it was popular eugene, who bought a phone immediately for fear they would sell out marlene, who waited six months to buy a phone

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.

Identify the three components of a family's culture and provide one example from your own experience