Ap stats Multiple choice.

Question 5 (2 points) (07.02 MC) An experiment was conducted to test the effect of a new dietary supplement for weight loss. Ten men and 10 women were given the supplement daily for a month, then the amount of weight each person lost was determined. A significance test was conducted at the of = 0.05 level for the difference in the means of the number of pounds lost between men and women. The test resulted in t = 2.178 and p = 0.03. If the alternative hypothesis in question was Ha: Um - Ww # 0, where Um equals the mean number of pounds lost by men and My equals the mean number of pounds lost by women, what conclusion can be drawn? (2 points) O a There is not a significant difference in mean weight loss between men and women. Ob There is sufficient evidence that there is a difference in mean weight loss between men and women. O c There is sufficient evidence that, on average, men lose more weight than women. O d The proportion of men who lost weight is greater than the proportion of women. O e There is insufficient evidence that the proportion of men and women who lost weight is different.Question 4 (2 points) {0102 MC) The owners of Prim's Pizza are concerned that many of their customers are starting to purchase pizza from The Pizza Palace because of its new pizza,which has fewer calories than Prim's. A random sample of \"IUD medium pizzas from Prim's found a mean of 240 calories and a standard deviation of 8.6 calories. A random sample of 100 medium pizzas from The Pizza Palace found a mean of 21 O calories and a standard deviation of 5.? calories) Which of the following formulas gives a 95% condence interval for the difference in mean calories between a Prim's Pizza medium pizza and a medium pizza from The Pizza Palace? {2 points) 0 a 301:1.95 3+3 100 100 O b 2 songs E+E 100 100 O c songs E+i 99 99 0 '1 301:1.93 3+3 100 100 0 e z 30:l:1.93 E+E 100 100 Question 3 (2 points) (07.02 LC) A study is being conducted to compare protein shake A and protein shake B to determine which is better at bulking up muscle tissue. Customers believe shake B is better at bulking up muscle tissue. What are the appropriate hypotheses for this testing scenario? Let A equal the mean of the effectiveness of protein shake A and up equal the mean of the effectiveness of protein shake B. (2 points) O a Ho: XA - XB = 0 Ha: XA - XB >0 Ob Ho: XA - XB = 0 Ha: XA - XB + 0 O c Ho: HA - HB = 0 Ha: HA - HB >0 Od Ho: HA - HB = 0 Ha: HA - HB