STUDY GUIDE ANSWERS Part 2

Because the proposed population mean of 986 is not in

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Unformatted text preview: sed population mean of 98.6 is not in this 95% CI, we know that the sample mean would differ significantly from this population mean at the .05 level. b) 2.7 x 100 ; X z crit x = 96.08 ± 2.58 (.27); so, = 96.08 ± .7 Therefore the 99% CI goes from 95.38 to 96.78. 2. a) X b) 6.5625 4.873 ; 4.873 1.22 16 X z crit x = 6.56 ± 1.96 (1.22); so, = 6.56 ± 2.39 Therefore, the 95% CI goes from 4.17 to 8.95. x c) Yes, you can reject the null at the .05 level (2-tailed) because 9 is not contained in the 95% CI in part b. Chapter 7 1. Younger: Mo...
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This note was uploaded on 08/18/2013 for the course STATS 101 taught by Professor Wallacesherman during the Fall '12 term at Dunwoody.

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