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An irate student complained that the cost of textbooks was too high. He randomly surveyed 36 other students and found that the mean amount of

An irate student complained that the cost of textbooks was too high. He randomly surveyed 36 other students and found that the mean amount of money spent for textbooks was $121.60. If the standard deviation of the population was $6.36, find the 95% confidence interval of the true mean. Liv

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