STUDY GUIDE ANSWERS Part 2

Because the proposed population mean of 986 is not in

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

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...
View Full Document

Ask a homework question - tutors are online