For each of the following situations, identify the response variable and the pop
ID: 3315091 • Letter: F
Question
For each of the following situations, identify the response variable and the populations to be compared, and give I, the ni, and N.
(a) A poultry farmer is interested in reducing the cholesterol level in his marketable eggs. He wants to compare two different cholesterol-lowering drugs added to the hen's standard diet as well as an all-vegetarian diet. He assigns 35 of his hens to each of the three treatments.
Populations: (Select all that apply.)
hens on an all-vegetarian diet
eggs with different cholesterol levels
all hens on a farmall eggs laid on a farm
hens on a standard diet and receiving one of two cholesterol-lowering drugs
(b) A researcher is interested in students' opinions regarding an additional annual fee to support non-income-producing varsity sports. Students were asked to rate their acceptance of this fee on a five-point scale. She received 91 responses, of which 30 were from students who attend varsity football or basketball games only, 18 were from students who also attend other varsity competitions, and 43 who did not attend any varsity games.
Populations: (Select all that apply.)
students who attend other varsity competitions
students who play sports
students who do not attend any varsity games
students who attend varsity football or basketball games
students who pay an annual fee
(c) A professor wants to evaluate the effectiveness of his teaching assistants. In one class period, the 51 students were randomly divided into three equal-sized groups, and each group was taught power calculations from one of the assistants. At the beginning of the next class, each student took a quiz on power calculations, and these scores were compared.
Populations: (Select all that apply.)
students in the three TA groups
the three teaching assistants
all students at the school
students passing the course
students who like their TA
I = n1 = n2 = n3 = N =Explanation / Answer
a) Reponse variable is egg cholesterol level
Populations: Hens on all vegetarian diet
Hens on a standard diet and receiving one of two cholestrol drugs
b) Response variable = acceptance rating on five point scale
Populations:
students who attend other varsity competitions
students who do not attend any varsity games
students who attend varsity football or basketball games
c) Response variable is quiz score
Populations:
students in the three TA groups
I = 3 n1 = 35 n2 = 35 n3 = 35 N = 105Related Questions
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