brandy127
16.04.2020 •
Mathematics
A researcher claims that more than 30 percent of students of WPU use reading glasses. A consumer agency wants to test this claim. The agency takes a random sample of 120 students and finds that 60 of them use reading glasses. H0 is null hypothesis, and Ha is alternative hypothesis. Which method the agency can use to check the researchers claim?
A. Hypothesis testing - Z test for mean B. Hypothesis testing - Z test for proportion C. None of the above
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Ответ:
Given
16/(root41 - 5)
=16(root41+5)/[(root 41 -5)(root41+5)]
=[16(root41+5)]/[(root41)^2 -(5)^2]
=[16(root41+5)]/(41-25)
=16(root41+5]/16
=root41+5