Twelve runners are asked to run a 10-kilometer race on each of two consecutive weeks. In one of the races, the runners wear one brand of shoe and in the other a different brand. The brand of shoe the...
Twelve runners are asked to run a 10-kilometer race on each of two consecutive weeks. In one of the races, the runners wear one brand of shoe and in the other, a different brand. The brand of shoe they wear in each race is determined at random. All runners are timed and are asked to run their best in each race. The results (in minutes) are given below. Runner Brand 1 Brand 2 1 31.23 32.02 2 29.33 28.98 3...
A blind taste test is conducted to determine which of two colas, Brand A or Brand B, individuals prefer. Individuals are randomly asked to drink one of the two types of cola first, followed by the other cola, and then asked to disclose the drink they prefer. Results of the taste test indicate that 59 of 100 individuals prefer Brand A. Complete parts a through c. (a) Conduct a hypothesis test (preferably using technology) HO. p-p0 versus HI : pf...
10.2 A blind taste test is conducted to determine which of two colas, Brand A or Brand B, individuals prefer. Individuals are randomly asked to drink one of the two types of cola first, followed by the other cola, and then asked to disclose the drink they prefer. Results of the taste test indicate that 48 of 100 individuals prefer Brand A. Complete parts a through c. Do not reject the null hypothesis for the values of po between 0.39...
Continue the example in which the farmer claims that organic tomatoes are higher in vitamin A than conventional tomatoes, and the hypotheses to be tested are Ho : y = 1500 versus HQ:p > 1500, where u is the average amount of viiamin A (in IU) in organically grown tomatoes. Let's assume that the distribution of vitamin A is symmetric, so that the median amount of vitamin A in conventional tomatoes is also 1500 IU. In other words, half of...