Chapter 7 sol - 2 n s x 20 Because the sample size is so...

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Chapter 7 4. a.   5 . 59 , 1 . 57 18 . 1 3 . 58 25 3 96 . 1 3 . 58 b.   9 . 58 , 7 . 57 59 . 3 . 58 100 3 96 . 1 3 . 58 c.   1 . 59 , 5 . 57 77 . 3 . 58 100 3 58 . 2 3 . 58 d. 82% confidence 09 . 18 . 82 . 1 2 , so 34 . 1 09 . 2 z z and the interval is   7 . 58 , 9 . 57 100 3 34 . 1 3 . 58 . e. 62 . 239 1 3 58 . 2 2 2 n so n = 240. 12. 89 ,. 73 . 08 . 81 . 110 34 . 58 . 2 81 . 58
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Unformatted text preview: . 2 n s x 20. Because the sample size is so large, the simpler formula (7.11) for the confidence interval for p is sufficient. 163 ,. 137 . 013 . 15 . 4722 85 . 15 . 58 . 2 15 ....
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