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9. Hypothesis Testing for One Sample
9. Hypothesis Testing for One Sample / Performing Hypothesis Tests: Means / Problem 13
Problem 13

A food safety agency states that no more than 2%2\% of all packaged chicken breasts sold in major grocery stores contain trace amounts of a certain pathogen. A researcher, believing the true rate is higher, tests 400400 randomly selected packages. Which of the following correctly states the null and alternative hypotheses for the researcher's test?