In 2015, 45% of Americans had only a cell phone (and no landline). A research firm plans

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In 2015, 45% of Americans had only a cell phone (and no landline). A research firm plans to investigate whether this percentage has changed in the meantime. In a recent sample of 1252 people, 613 reported having only a cell phone.

Calculate the z-score and find the two-tailed P-value using the z-table.

Posted Date: May 13, 2024 07:00 AM

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In 2015, 45% of Americans had only a cell phone (and no landline). A research firm plans

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Define Variables p population proportion 045 proportion of Americans with only a cell phone in 2015 ... View the full answer

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