{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

e71_hw3_scan

# e71_hw3_scan - Stats for Strategy Whitten HW 3 Solution...

This preview shows pages 1–4. Sign up to view the full content.

Stats for Strategy Whitten HW 3 Solution Directions: So that we get similar answers, use at least four decimal places when rounding intermediate calculations. 6.45 (a) H A : μ < 1250 H 0 : μ 1250 (b) H A : μ > 32 H 0 : μ 32 (c) H A : μ 6 = 5 H 0 : μ = 5 6.46 (a) H A : μ < 18 H 0 : μ 18 (b) H A : μ > 50 H 0 : μ 50 (c) H A : μ 6 = 24 H 0 : μ = 24 7.3 (a) μ = mean monthly rent for all unfurnished, one-bedroom apartments in the community, in \$ ¯ x = 531 s = 82.7916 n = 10 = degrees of freedom are df = 9 A 95% conﬁdence interval for μ is ¯ x ± t * s n 531 ± (2 . 262) (82 . 7916) 10 531 ± 59 . 22 = \$471.78 to \$590.22 1

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
4. There is suﬃcient evidence to show that store sales diﬀer this month compared to last month, on average. (c) No, this conclusion is about the mean change in sales for all stores, not about changes in individual stores. It is even possible for an individual store to suﬀer decreased sales (a negative change.) 7.7, Part 2

This preview has intentionally blurred sections. Sign up to view the full version.

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

{[ snackBarMessage ]}

### Page1 / 6

e71_hw3_scan - Stats for Strategy Whitten HW 3 Solution...

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online