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In a survey, the Nielson Organization found that 75% of those surveyed used cents-off coupons when...

In a survey, the Nielson Organization found that 75% of those surveyed used cents-off coupons when grocery shopping. In order to test that the percent is less than 75 a customer organization randomly selects 35 shoppers and determines that 23 out of the 35 used cents-off coupons. Is there sufficient data evidence to reject the findings of the Nielson Organization using a=0.05?

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