In order to determine how American undergraduate college students feel about eliminating spring break in order to finish spring term a week early, a survey was conducted. Two hundred undergraduate students from the University of Miami (FL) were interviewed. Both of the interviewers hired to conduct the survey were told to interview 25 freshmen, 25 sophomores, 25 juniors, and 25 seniors. Of the 200 students interviewed, 20% were in favor of the elimination of spring break, 70% were opposed, and 10% had no opinion.The sampling proportion in this survey is
A. 200/(the number of American college students).
B. 100%.
C. 200/(the number of University of Miami, FL undergraduates).
D. 20%.
E. none of these
Answer: A
Mathematics
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A. - 
B. 
C. - 
D. - 
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A. 1.602 B. 1.600 C. 1.604 D. 1.607
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Use technology to calculate det A.A = 
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Mathematics