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(a) Find a point estimate for the proportion of cell phone owners aged 18-24 who have an Android phone. Round the answer to at least

(a) Find a point estimate for the proportion of cell phone owners aged 18-24 who have an Android phone. Round the answer to at least three decimal places. The point estimate for the proportion of cell phone owners aged 18-24 who have an Android phone is . (b) Construct a 95% condence interval for the proportion of cell phone owners aged 18-24 who have an Android phone. Round the answers to at least three decimal places. A 95% condence interval for the proportion of cell phone owners aged 18-24 who have an Android phone is E]

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