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According to National Institute for Occupational Safety and Health, job stress poses the major threat to the health of workers. A national survey of restaurant employees found that 75% said that job stress had the negative impact on their personal lives. A sample of 100 employees of restaurant chain finds that 68 answer "Yes" when asked: "Does job stress have the negative impact on your personal life?" Is this good reason to think that the proportion of all employees of this chain who would say "Yes" differs from national proportion, p0 = 0.75? Employ a 5% level of significance.

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