Now consider the textbook expense of all IUPUI students.  The mean and variance of textbook expense of all IUPUI students are as follows: ? = $518.66 ?² = 15965.14   From the population of IUPUI students you take repeated samples of size                 ? = 92     and compute the sample mean textbook expense.      10 The middle interval that captures 95% of the means from sample of size ? = 92 is,             a 492.84 544.48 b 488.54 548.78 c 484.23 553.09 d 479.93 557.39

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