Question

4. A consumer advocacy group was interested in how effective a new diet pill is for men. To investigate. they decide to randomly assign 8 men to receive the new diet pill, 8 men to receive a diet pill currently on the market, and 8 men to receive a placebo. The amount of weight lost (in pounds) after 3 months would be recorded. The 24 men available for the study are listed below along with their ID number. Cluster 3 3:Carlson 6:Donaldson 9:Jones 12:Olson 15:Schmidt 18:Smith 21:Tuft 24:Zimmer Cluster 2 2:Brock 5: David 8:Jacobs 11:Munson 14:Sachs 17:Shipman 20:Thompson 23: Wilson Cluster1 l:Anderson 4:Crooney 7:Grotian 10:Klein 13:Peters 16:Severs 19:Taner 22:Ulman (a) 7 poins Take a Simple Random Sample to select the 8 men who will be assigned to the new diet pill group. Use a Seed of 1967. List the ID numbers of the 8 selected men: (b) 7 points Take a 1-in-3 Systematic Sample to select the 8 men who will be assigned to the new diet pill group. Use the men's ID numbers as the ordering. Use a Seed of 588. List the ID numbers of the 8 selected men: (c) 7 points Use Cluster Sampling (with the columns of men's names as seen above as the clusters) to select the 8 men who will be assigned to the new diet pill group. Use a Seed of 2001. List the ID numbers of the 8 selected men: 5. 4 points each For each scenario given below, identify the sampling method being described (simple random sample, stratified sample, cluster sample, systematic sample). #1 After a hurricane, a disaster area is divided into 200 equal grids. Thirty of the grids are selected at random and every occupied household in a selected grid is interviewed to help focus relief efforts on what residents require the most. #2 soybeans are planted on a 48-acre field. The field is divided into one-acre subplots. A random, sample of plants is taken from each subplot to estimate the harvest

Answer 1

4.(a) he d's ore 9, t, , s, 12, 8, 4, 13 y.e) he id's ane: 3, 6,4, 12, 15, t8, 21, 24 wiu use sim metod . (2) we wiu use saed sampling method