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A study believes that 70% of adults in the Philippines own a cellphone. A cellphone manufacturer believes that the actual number is much QUESTION less

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A study believes that 70% of adults in the Philippines own a cellphone. A cellphone manufacturer believes that the actual number is much QUESTION less than 70%. 100 Filipino adults were surveyed, of which 74 have cellphones. Using a 5% level of significance, is the cellphone manufacturer's claim valid or not? CLAIM EVIDENCE REASONING

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