PROBLEM 1 point possible) In the article Coffee, Caffeine, and Risk of Depressio

Question

PROBLEM 1 point possible) In the article Coffee, Caffeine, and Risk of Depression Among Women in the September 2011 edition of the Archives of Internal Medicine, researchers investigated the relationship between caffeine consumption and depression among women. The participants in this study were older, with substantially lower rates of depression when compared to female teens. Researchers compared two groups of women (among others) in this study: those who do not drink coffee, and those who routinely drink 4 or more cups of coffee each day. For this question, a coffee drinker is a woman who drinks four or more cups each day The standard error formula for the difference between sample proportions is: Pi(1-Pi) , p2(1-p2) Give the standard error, using p P2 0.06, with sample sizes of 920 and 1100? Round to four places after the decimal 16 .16 SUBMIT RESET

Explanation / Answer

standard error can be calculated using the above formula as sqrt(0.06*(1-0.06)/920 + 0.06*(1-0.06)/1100)= 0.0106

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