9. The Z-score that is associated with a confidence level of 95% is: a. 2.575 b. 1.645 C. 2.01 d. 1.96 10. The z-score associated with a confidence level of 99% a. 2.575 b. 1.645 C. 2.01 d. 1.96

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A: This is a problem of Group Theory.

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A: NOTE: As per the guidelines we are supposed to answer only one question because this is not a…

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A: Solution :-

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A: We will solve question number  9 as you mentioned.

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A: This is the question from the vector space.