(Answered) In a survey conducted in 2003 the counts carrying cell

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In a survey conducted in 2003, the counts carrying cell phones were 233 of 282 females (sample proportion 0.83), and 116 of 162 males (sample proportion 0.72). The pooled sample proportion was (233 + 116)/(282 + 162) = 0.79. Carry out a one-sided z test by hand to see if the proportion carrying cell phones was significantly higher for females.

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