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- How many permutations of the letters W, X, Y, and Z are possible?If a you had two groups in a study Group 1 had a n=25 and Group 2 had a n=21, what would the df be for the study?A building contractor has a chance to buy an odd lot of 9,000 used bricks at an auction. She is interested in determining the proportion of bricks in the lot that are cracked and therefore unusable for her current project, but she does not have enough time to inspect all 9,000 bricks. Instead, she checks 150 bricks to determine which ones are cracked. What is the population of interest? O the rest of the 8,700 bricks O the rest of the 8,850 bricks O all building contractors O all 9,000 bricks in the lot O the 150 bricks selected for inspection What group constitutes the sample? O all building contractors O all 9,000 bricks in the lot O the rest of the 8,700 bricks O the 150 bricks selected for inspection O the rest of the 8,850 bricks
- An experiment was done on painting classroom chairs. The results of the experiment is in the following table: No. of students doing the painting 1 2 3 4 No. of tables painted in four hours 1 4 9 16 If the number of students were doubled, will the number of chairs that will be painted be doubled, tripled, or quadrupled?From a group of 15 women and 11 men, a researcher wants to randomly select 7 women and 7 men for a study. In how many ways can the study group be selected? OA. 2,123,550 OB. 34,095,600 OC. 9,657,700 O D. 6,765 ——Beth performed an experiment in which she randomly drew one napkin at a time from a drawer, with replacement. The drawer contained one napkin each of gray, cyan, beige, lilac, and crimson colors. The results of her experiment are shown below. Napkin Color Times Drawn gray 8 cyan 23 beige 12 lilac 4 crimson 25 Based on the experiment above, predict the number of times a lilac napkin would be drawn if she performs the experiment a total of 216 times. A.12 B.16 C.13 D.14
- Dr. Cantelmi is interested in conducting a 2 x 2 x 3 mixed factorial design, with 20 participants in each cell. Which of the following would NOT be a possible number of participants for this study? a. 60 b. 40 c. 20 d. 80Question 8 A research group is looking at fans at a football game. For some reason, they need to make sure that have a certain amount of fans from either team. How big of a group of random fans at the game does the research group need to look at to guarantee they have 7 fans from either team?A researcher studying allergies to animals is interested in performing a study at the local elementary school. At Pineview Elementary, there are 4 1st grade classrooms. The researcher picks 2 of the 4 classrooms and asks every 1st grader in the 2 classrooms what type of animal they own (cat, dog, rabbit, etc.). He also asks how often they experience allergies. What type of study is this?
- A building contractor has a chance to buy an odd lot of 1,000 used bricks at an auction. She is interested in determining the proportion of bricks in the lot that are cracked and therefore unusable for her current project, but she does not have enough time to inspect all 1,000 bricks. Instead, she checks 150 bricks to determine which ones are cracked. What is the population of interest? all building contractors all 1,000 bricks in the lot the rest of the 850 bricks the 150 bricks selected for inspection the rest of the 700 bricks What group constitutes the sample? the 150 bricks selected for inspection all building contractors the rest of the 700 bricks all 1,000 bricks in the lot the rest of the 850 brickS Submit AnswerAn experiment with three steps with 13 outcomes possible for the first step, 5 outcomes possible for the second step, and 18 outcomes possible for the third step. How many experimental outcomes exist for the entire experiment? Select one: a. 1440 O b. 810 C. 3510 O d. 1560In a random sample of 80 Americans, 44 wished that they were rich. In a random sample of 90 Europeans, 41 wished that they were rich. At a=0.01, can we conclude there is a difference in the proportions?