ciel8809
29.03.2021 •
Mathematics
Suppose the proportion of sophomores at a particular college who purchased used textbooks in the past year is ps and the proportion of freshmen at the college who purchased used textbooks in the past year is pf . A study found a 98% confidence interval for ps - pf is (0.238, 0.424). Give an interpretation of this confidence interval.
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Ответ:
1) ratio
2) 6
3) 2
4) 16