An organization published a study on a minority individual's impact on mixedelhnicity deliberating groups. The researchers randomly assigned subjects to one of several 3-member decision-making groups. The groups' ethnic composition varied from D minority individuals to 3 minority individuals. Each group was then randomly assigned to utilize one of three types of decision rules: unanimous. majority mic. or range voting. Ten groups were created for each of the 4 x 3 =12 combinations of ethnic composition and decision rule. One variable of interest1 measured for each group, was the number of words spoken by minority individuals on a certain topic per 1.000 words spoken during the deliberations. Complete parts a through d below. a. Why is this experiment considered a designed study? 0 A. The study observed the group compositions and the response on a sample of groups. 0 B. The organization controlled the combinations of group composition and decision rule and the method of assigning groups to each combination of factors. 0 C. The organization controlled the composition of each group and the method of assigning groups. C) D. The study observed the combinations of group composition and decision rule and the response on a sample of groups. b. Identify the experimental unit and dependent variable in this study. The experimental unit is the Y The dependent variable '5 the V 1:. Identity the factors for this study. Give the levels of each factor. Identify the factoris]. Select all that apply. Ethnic composition Decision rule Number of words spoken PPF'? Group stze Give the levels of each factor. Select all that apply. Ethnic composition: 1 to 3 minority Individuals Group size: 0 to 3 individuals Number o1 words spoken: D to 1 hour 3.09"? l"|nr'i:inn rIIlA' Ilnnnimnln: mainritu ruin nr PannA untinn