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A statistics instructor believes that fewer than 20% of Evergreen Valley College (EVC) students attended the opening night midnight showing of the latest Harry Potter

A statistics instructor believes that fewer than 20% of Evergreen Valley College (EVC) students attended the opening night midnight showing of the latest Harry Potter movie. She surveys 84 of her students and finds that 15 of them attended the midnight showing. Conduct at ToH to determine if there is insufficient evidence to conclude that the percent of all EVC students who attended the midnight showing of Harry Potter is less than 20%

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