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9. Hypothesis Testing for One Sample - 2! 1부
9. Hypothesis Testing for One Sample / Performing Hypothesis Tests: Proportions / 문제 9
문제 9

A researcher claims that at least 55%55\% of adults prefer online shopping. In a sample of 120120 adults, 6060 say they prefer online shopping. Can a normal sampling distribution be used? If so, test the claim at α=0.05α = 0.05.