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A random sample of 75 students at the University of Minnesota spend an average of...

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A random sample of 75 students at the University of Minnesota spend an average of 614 per month in rent with a standard deviation of 219 The distribution is moderately skewed to the high end Which of the following statements are true i 95 of students at the university spend 564 to 664 on rent ii We are 95 confident that the average rent for students at the university is between 564 and 664 iii Because we cannot examine other characteristics of the students in the random sample it is not advisable to construct a confidence interval Oi only O ii only O iii only Oi and ii O i ii and iii

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