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    Question

    Which test is used when sample size is large (>30) and

    population standard deviation is known?
    A F-test Correct Answer Incorrect Answer
    B Z-test Correct Answer Incorrect Answer
    C StudentтАЩs test Correct Answer Incorrect Answer
    D T-test Correct Answer Incorrect Answer

    Solution

    Z-test is used when sample size is large (>30) and population standard deviation is known.

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