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Q1: Determine the value of the confidence coefficient z(/2) for 86% confidence: Answer: Z =1.48 Q2: Determine the value of the confidence coefficient z(/2) for

Q1: Determine the value of the confidence coefficient z(/2) for 86% confidence: Answer: Z =1.48

Q2: Determine the value of the confidence coefficient z(/2) for 90% confidence: Answer Z =1.645

Now, find the z- value for

C)C=88%, Z /2

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