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Data were collected by giving a survey to a random sample of students at a university. One question asked was: "Do you believe in extraterrestrial life?"Here is a comparison of the proportions of males and females that said "yes":
Subscripts in these questions are 1 = females, 2 = males.
-Suppose we wish to know if females at the university are less likely to believe in extraterrestrial life than males. What are the appropriate null and alternative hypotheses?
A) H0: 1 - 2 = 0 and Ha: 1 - 2 < 0
B) H0: 1 - 2 < 0 and Ha: 1 - 2 = 0
C) H0: p1 - p2 < 0 and Ha: p1 - p2 = 0
D) H0: p1 - p2 = 0 and Ha: p1 - p2 < 0
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