SUPPLEMENTARY EXERCISES for ... - WH Freeman

Section 2 23of the drug. (In fact, the experiment was stopped ahead of schedule because the hydroxyureagroup had only half as many pain episodes as the control group. Ethical standards requiredstopping the experiment as soon as significant evidence became available.)S3.11 Will providing child care for employees make a company more attractive to women, eventhose who are unmarried? You are designing an experiment to answer this question. You preparerecruiting material for two fictitious companies, both in similar businesses in the same location.Company A’s brochure does not mention child care. There are two versions of Company B’smaterial, identical except that one describes the company’s on-site child-care facility. Yoursubjects are 40 unmarried women who are college seniors seeking employment. Each subjectwill read recruiting material for both companies and choose the one she would prefer to workfor. You will give each version of Company B’s brochure to half the women. You suspectthat a higher percentage of those who read the description that includes child care will chooseCompany B.(a) Outline the design of the experiment. Be sure to identify the response variable.(b) The names of the subjects appear below. Do the randomization required by your design andlist the subjects who will read the version that mentions child care. (If you use Table B, beginat line 121.)Abrams Danielson Gutierrez Lippman RosenAdamson Durr Howard Martinez SugiwaraAfifi Edwards Hwang McNeill ThompsonBrown Fluharty Iselin Morse TraversCansico Garcia Janle Ng TuringChen Gerson Kaplan Quinones UllmannCortez Green Kim Rivera WilliamsCurzakis Gupta Lattimore Roberts WongS3.12 A horticulturist is comparing two methods (call them A and B) of growing potatoes.Standard potato cuttings will be planted in small plots of ground. The response variables arenumber of tubers per plant and fresh weight (weight when just harvested) of vegetable growthper plant. There are 20 plots available for the experiment. Sketch the outline of a rectangularfield divided into 5 rows of 4 plots each. Then outline the experimental design and do therequired randomization. (If you use Table B, start at line 145.) Mark on your sketch whichgrowing method you will use in each plot.S3.13 The following situations were not experiments. Can an experiment be done to answerthe questions raised? If so, briefly outline its design. If not, explain why an experiment is notfeasible.(a) The “gender gap” issue of Exercise S3.2.(b) The comparison of two surgical procedures for breast cancer in Exercise S3.3.S3.14 You have 100 students from a management course available to serve as subjects in theexperiment of Exercise S3.8 on effectiveness of television advertising. Outline a completelyrandomized design for this experiment in detail. (You need not do any randomization.)S3.15 You read a news report of an experiment that claims to show that a meditation technique