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QUESTIONS 6-11 ARE RELATED TO THE FOLLOWING Now consider the textbook expense of all IUPUI students. The mean and variance of textbook expense of all IUPUI students are as follows: ? = $510.88 ?² = 15326.53 From the population of IUPUI students you take repeated samples of size n = 65 and compute the sample mean textbook expense. 6 The standard error of the ?x is . a 13.82 b 15.36 c 17.06 d 18.96 7 The fraction of sample means below $490 is . a 0.0870 b 0.0612 c 0.0431 d 0.0304 8 The fraction of sample means that fall with $20 from the population mean is . a 0.9070 b 0.8557 c 0.8072 d 0.7616 9 The margin of error for the middle interval which captures 95% of the means from samples of size = 65 is, a 21.22 b 23.84 c 26.79 d 30.10 10 The middle interval that captures 95% of the means from sample of size n = 65 is, a 492.82 528.94 b 486.80 534.96 c 480.78 540.98 d 475.77 545.99 11 To obtain a margin of error of ±$20 for the interval that captures 95% of the sample means, the minium sample size is . a 133 b 148 c 164 d 182

          QUESTIONS 6-11 ARE RELATED TO THE FOLLOWING
Now consider the textbook expense of all IUPUI students. The mean and variance of textbook expense of all IUPUI students are as follows:
? = $510.88
?² = 15326.53
From the population of IUPUI students you take repeated samples of size
n = 65
and compute the sample mean textbook expense.
6 The standard error of the ?x is ______.
a 13.82
b 15.36
c 17.06
d 18.96
7 The fraction of sample means below $490 is ______.
a 0.0870
b 0.0612
c 0.0431
d 0.0304
8 The fraction of sample means that fall with $20 from the population mean is ______.
a 0.9070
b 0.8557
c 0.8072
d 0.7616
9 The margin of error for the middle interval which captures 95% of the means from samples of size = 65 is,
a 21.22
b 23.84
c 26.79
d 30.10
10 The middle interval that captures 95% of the means from sample of size n = 65 is,
a 492.82 528.94
b 486.80 534.96
c 480.78 540.98
d 475.77 545.99
11 To obtain a margin of error of ±$20 for the interval that captures 95% of the sample means, the minium sample size is ______.
a 133
b 148
c 164
d 182

$QUESTIONS 6-11 ARE RELATED TO THE FOLLOWING Now consider the textbook expense of all IUPUI students. The mean and variance of textbook expense of all IUPUI students are as follows: ? = 510.88 ?² = 15326.53 From the population of IUPUI students you take repeated samples of size n = 65 and compute the sample mean textbook expense. 6 The standard error of the ?x is . a 13.82 b 15.36 c 17.06 d 18.96 7 The fraction of sample means below490 is . a 0.0870 b 0.0612 c 0.0431 d 0.0304 8 The fraction of sample means that fall with 20 from the population mean is . a 0.9070 b 0.8557 c 0.8072 d 0.7616 9 The margin of error for the middle interval which captures 95% of the means from samples of size = 65 is, a 21.22 b 23.84 c 26.79 d 30.10 10 The middle interval that captures 95% of the means from sample of size n = 65 is, a 492.82 528.94 b 486.80 534.96 c 480.78 540.98 d 475.77 545.99 11 To obtain a margin of error of ±20 for the interval that captures 95% of the sample means, the minium sample size is . a 133 b 148 c 164 d 182$

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