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Given a sample size of 27, standard deviation of 2.9, and a sample average of 21.92, a 9% prediction interval would be between? Choices are,

Given a sample size of 27, standard deviation of 2.9, and a sample average of 21.92, a 9% prediction interval would be between? Choices are, 13.65 to 30.19, 15.82 to 28.02, 16.87 to 26.97, and 30 to 50

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