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The reaction time before lunch was compared with the reaction time after lunch for a group...

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Basic Math

The reaction time before lunch was compared with the reactiontime after lunch for a group of 28 office workers. Twenty twoworkers found their reaction time before lunch was shorter, and twocould detect no difference, while the rest had a longer reactiontime before lunch. Is there evidence that the reaction time beforelunch is significantly shorter than the reaction time afterlunch?

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Let denotes the true proportion of workers who found    See Answer
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