Researchers suspect that 20% of all high school students smoke at least one pack of cigarettes a day. At Wilson High School, a randomly selected sample of 300 students found that 57 students smoke at least one pack of cigarettes a day. At α = 0.05, test the claim that fewer than 20% of all high school students smoke at least one pack of cigarettes a day.

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A: Given, Population proportion = p = 63% = 0.63Sample proportion = p^ =70% = 0.70Sample size = n =…

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A: 1.

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