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?   95% of students at the university spend $564 to $664 on rent. We are 95% confident that the average rent for students at the university is between $564 and $664. Because we cannot examine other characteristics of the students in the random sample, it is not advisable to construct a confidence interval. i only ii only iii only i and ii i, ii, and iii

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