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11. Which correlation coefficient is closest to this scatterplot? A. 0.75 B. -0.10 C. 1.10 D. 0.45 12. Which of the following statements are true? I. A completely randomized design offers no control for lurking variables. II. A randomized block design controls for the placebo effect. Ill. In a double-blind, the treating physicians are not aware of who received the treatment A. Ill only B. II only C. I only D. None of the above Progress Test 2 - MP 17, 2023 - Page 5 of 23 13. The famous Rose Bowl Parade features floats that are decorated with roses and other flowers from around the world. Based on past experience, one float decorator found that . 10% of the bundles of roses delivered will not open in time for the parade, . 20% of the bundles of roses delivered will have bugs on them and be unusable, . 60% of the bundles of roses will turn out to be beautiful, . the rest of the bundles of roses delivered will bloom too early and then discolor Conduct a simulation to estimate how many roses the float decorator will need to purchase to have 10 good bundles of roses to place on the float. Use the random number table given below and specify the outcome for Trial 1. Hint: think two digit simulation. 08422 68953 19645 09303 23209 02560 15953 34764 35080 A. 12 bundles needed B. 21 bundles needed C. 10 bundles needed D. There is not enough information given. 14. The model for the price (in thousands of dollars) and size (in thousands of square feet) of houses is expressed by Price - 3017+91454 See . What does the model predict for the price of a 2,033 square foot house? A. $185,929 B. $188,942 C. $182,911 D. $191,017 15. This model predicts the annual repair costs for a car based upon the number of oil changes in that year. Costs- 65027-7307 Changes. Find the residuals for (8, $565). A. $65.71 B. $565 C. $499.29 D. $650.27B. The mean will become 0. C. The center of the distribution will not change D. The spread will change. 18. Find the correlation coefficient of fat content and sodium for several brands of hamburger. Fat (9) 19 31 34 39 39 43 Sodium (mg) 920 1500 1310 360 1180 940 1260 A. 0. 199 B. -0.199 C. 0.040 D. -0.040 19. Name the sampling method and describe the kind of bias that might be present if "a statistics teacher decides that instead of randomly selecting students to survey on how they feel about the course she just offers students a chance to participate." A. census, the bias would be towards students who did not enjoy the course. B. voluntary response sample, the bias would be towards students who enjoy the course. C. convenience sample, the bias would be undercoverage of those not taking the course. D. convenience sample, the bias is response bias. Q Hledat L hp