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week_6.docx
III. Testing the Difference Between Two Means: Using the z-Test
23. Home prices in two different locations are shown below. At α=0.01 is there enough evidence to reject the claim that the average cost in both locations is the same?
|
Location A |
Location B |
|
= $93,430 |
= $98,043 |
|
= $5,602 |
= $4,731 |
|
= 35 |
= 40 |
24. National and local ACT scores are shown below. At α=0.05, can we conclude that the local scores are below the national average?
|
National ACT score |
ACT score |
|
= 21.4 |
= 20.8 |
|
= 3.0 |
= 3.0 |
|
= 1,000 |
= 500 |
Week 6 Homework Assignments
1. This week we must read:
Lane et al. Chapters 11, 12, & 13
Textbook #1: Lane et al. Introduction to Statistics, David M. Lane et al., 2013.
( http://onlinestatbook.com/Online_Statistics_Education.pdf )
Illowsky et al. Chapters 9 & 10
Textbook #2: Illowsky et al. Introductory Statistics, Barbara Illowsky et al., 2013.( http://openstaxcollege.org/files/textbook_version/hi_res_pdf/15/col11562-op.pdf )
2. Do the five problems listed in the table below.
3. Please submit them in your Assignment Folder for grading.
|
eResources |
Chapter |
Problem |
Page* |
|
|
Lane et al. |
11 |
18 |
397 |
Type I, II errors |
|
|
12 |
3 |
441 |
Two Independent Samples |
|
Illowsky et al. |
9
|
65 |
508 |
Hypotheses, T/F |
|
|
|
77 |
510 |
Hypotheses, t-test |
|
|
10 |
80 |
561 |
Matched Pairs |
