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A national survey of graduate students is conducted to assess their consumption of coffee. The following table summarizes the data. What proportion of coffee drinkers

A national survey of graduate students is conducted to assess their consumption of coffee. The following table summarizes the data. What proportion of coffee drinkers (caffeinated and decaffeinated) is female? Do Not Drink Coffee Drink Decaffeinated Only Drink Caffeinated Coffee Male 145 92 370 Female 80 128 447 a. 0.70 b. 0.50 c. 0.554 d. 0.546

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