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11) For a sample of 200 IQ scores the mean score is 105.8. The standard deviation, o, is 15. Assume the scores are not normally

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11) For a sample of 200 IQ scores the mean score is 105.8. The standard deviation, o, is 15. Assume the scores are not normally distributed. Determine whether a normal distribution or a t-distribution should be used or whether neither of these can be used to construct a confidence interval

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