"Lance, an advertising researcher, is selecting potential survey participants from a list of all the people who have mail-ordered HMR dietary products since January 2012. The respondents will be sent a collection of ads and asked to select the ad that is most relevant to their health needs. Since every person in the target population has an equal and known likelihood of being picked, the group he selects will be a:"

Belstone, inc. is a merchandiser of stone ornaments. it sold 15,000 units during the year. the company has provided the following information: sales revenue $ 520,000 purchases (excluding freight in) 338,500 selling and administrative expenses 32,000 freight in 15,000 beginning merchandise inventory 43,000 ending merchandise inventory 58,500 how much is the gross profit for the year?

technology is the application of knowledge and tools to solve problems and perform tasks more efficiently. t/f

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.