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Americans also own a traditional phone

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Reference no: EM131960996

According to a CNN report, 93% of Americans also own a traditional phone (not a cell phone). We took a sample of 850 randomly selected Americans and found that 785 of them own a traditional phone.

Use formulas p hat = x/n and z= (p hat - p) / square p(1-p) / n

Reference no: EM131960996

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