Question: For a normal population with known variance o. answer the following questions: (a) What is the confidence level for the interval - 2.140/V +2140/Vi (b)

For a normal population with known variance o. answer the following questions:

(a) What is the confidence level for the interval - 2.140/V +2140/Vi

(b) What is the confidence level for the interval - 2.49/Va +249a/V

(c) What is the confidence level for the interval - 1.850/Vi +1.85a/Vi

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