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An Undergraduate Business Student Studies Diligently in the Library During

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An undergraduate business student studies diligently in the library during dead week in anticipation of an outstanding performance on her final exams.She asks a friend to spy on her at random intervals to determine what percentage of time she is actually studying.Over the course of three days,her friend records the following observations:
An undergraduate business student studies diligently in the library during dead week in anticipation of an outstanding performance on her final exams.She asks a friend to spy on her at random intervals to determine what percentage of time she is actually studying.Over the course of three days,her friend records the following observations: If the student wants a 95 percent confidence level (z = 1.96)and a degree of precision of + 0.08,how many more observations are needed? If the student wants a 95 percent confidence level (z = 1.96)and a degree of precision of + 0.08,how many more observations are needed?

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n = blured image (p)(1 - p)= blured image blured image blured image = 70.35
n ...

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