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Statistics Homework Solutions 122

# Statistics Homework Solutions 122 - 122 2 571 2 571 0 56921...

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122 CHAPTER 5 5. X 5 900, s 0 56921, n 6, t 6 1 025 2 571. The confidence interval is 5 9 2 571 0 56921 6 , or (5.303, 6.497). 7. Yes it is appropriate, since there are no outliers. X 205 1267, s 1 7174, n 9, t 9 1 025 2 306. The confidence interval is 205 1267 2 306 1 7174 9 , or (203.81, 206.45). 9. (a) 0.3 0.35 0.4 0.45 (b) Yes, there are no outliers. X 0 3688, s 0 0199797, n 8, t 8 1 005 3 499. The confidence interval is 0 3688 3 499 0 0199980 8 , or (0.344, 0.394). (c) 0.3 0.4 0.5 (d) No, the data set contains an outlier. 11. X 13 040, s 1 0091, n 10, t 10 1 025 2 262. The confidence interval is 13 040 2 262 1 0091 10 , or (12.318, 13.762). 13. X 1 250, s 0 6245, n 4,
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