Manipulate the following case! - Suppose that Dr. Mindaralew wanted to investigate the effect of eating nut on students' memory. He divided the students in to two groups. He fed 20 students in group 1 nut after lunch for about a month but,20 students in group 2 did not get nut. In the process of an experiment,he used 40 watt light intensity for both groups in two different rooms. In addition, he did not consider IQ of students as a major problem because he assumed that it can vary based on a chance. Identify the following A. Experimental group B. Control group C. Independent variable of the study D. Dependent Variable of the study E. Controlled variable F. Random Variable . A researcher wanted to investigate if smiling increases customer attraction. He selected two business centers with equivalent number of customers. He randomly assigned two smiling sales men (Group A) to Miracle business center and two non -smiling sales men (Group B) were assigned to Super business center. Finally, the researcher counted number of people who visited the business centers Depending on the given case identify the following: A. Independent Variable B. Dependent Variable D. Experimental group E. Control group - F. The best possible title of the research will be:

Question

Manipulate the following case! - Suppose that Dr. Mindaralew wanted to investigate the effect of eating nut on students' memory. He divided the students in to two groups. He fed 20 students in group 1 nut after lunch for about a month but,20 students in group 2 did not get nut. In the process of an experiment,he used 40 watt light intensity for both groups in two different rooms. In addition, he did not consider IQ of students as a major problem because he assumed that it can vary based on a chance. Identify the following A. Experimental group B. Control group C. Independent variable of the study D. Dependent Variable of the study E. Controlled variable F. Random Variable . A researcher wanted to investigate if smiling increases customer attraction. He selected two business centers with equivalent number of customers. He randomly assigned two smiling sales men (Group A) to Miracle business center and two non -smiling sales men (Group B) were assigned to Super business center. Finally, the researcher counted number of people who visited the business centers Depending on the given case identify the following: A. Independent Variable B. Dependent Variable D. Experimental group E. Control group - F. The best possible title of the research will be:

Answer 1

**Case 1: The Effect of Nuts on Student Memory*** **A. Experimental group:** Group 1 (the students who ate nuts)* **B. Control group:** Group 2 (the students who did not eat nuts)* **C. Independent variable:** Nut consumption (presence or absence of nuts in the diet)* **D. Dependent Variable:** Students' memory (presumably measured by some kind of memory test)* **E. Controlled variable:** Light intensity (40 watts in both rooms)* **F. Random Variable:** Students' IQ (assumed to vary randomly between the groups)**Case 2: The Effect of Smiling on Customer Attraction*** **A. Independent Variable:** Smiling (presence or absence of smiling by the salesmen)* **B. Dependent Variable:** Customer attraction (measured by the number of people visiting the business centers)* **D. Experimental group:** Group A (smiling salesmen at Miracle business center)* **E. Control group:** Group B (non-smiling salesmen at Super business center)* **F. The best possible title of the research will be:** "The Effect of Salesperson Smiling on Customer Traffic in Business Centers" or "Does Smiling Increase Customer Attraction? A Field Study in Two Business Centers."

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