Schactr and Gross (1968) gathered data from a group of 60 male students for abou

Question

Schactr and Gross (1968) gathered data from a group of 60 male students for about one hour in the afternoon. At the end of this period of time, a clock on the wall was correct (5:30 PM) for 20 participants, slow (5:00 PM) for 20 others, and fast (6:00 PM) for 20 more. The actual time for all groups was 5:30, the usual dinnertime for these students. While participants filled out a final questionnaire, the experimenters provided Wheat Thins for the students to eat. The weight of the crackers each student consumed was measured. The means were 5:00 group, 20 grams; 5:30 group, 30 grams; 6:00 group, 40 grams. Identify each of the following for this study.

a. population (you’ll have to make an inference about the population based on the sample)

b. sample

c. independent variable

d. levels of the independent variable

e. dependent variable

f. descriptive statistic(s)

g. any inferences warranted by this study (simply by eyeballing the results)

Explanation / Answer

a. population (you’ll have to make an inference about the population based on the sample)

students in the afternoon

b. sample

60 male students for about one hour in the afternoon

c. independent variable

period of time

d. levels of the independent variable

interval of time

e. dependent variable

number of students

f. descriptive statistic(s)

means of the group

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