# Stats Exam 5

1523 words 7 pages
Question 1 of 10
1.0 Points
A pharmaceutical company is testing the effectiveness of a new drug for lowering cholesterol. As part of this trial, they wish to determine whether there is a difference between the effectiveness for women and for men. Using = .05, what is the value the test statistic? Women
Men
Sample size
50
80
Mean effect
7
6.95
Sample variance
3
4

A. t = 3.252

B. z = 0.455

C. z = 0.081

D. z = 0.151

Question 2 of 10
1.0 Points A field researcher is gathering data on the trunk diameters of mature pine and spruce trees in a certain area. The following are the results of his random sampling. Can he conclude, at the .10 level of significance, that

A. No

B. Yes

C. Cannot Determine

Question 8 of 10
1.0 Points
The marketing manager of a large supermarket chain would like to use shelf space to predict the sales of pet food. For a random sample of 12 similar stores, she gathered the following information regarding the shelf space, in feet, devoted to pet food and the weekly sales in hundreds of dollars. Use these data to answer questions 8 through 10. Store
1
2
3
4
5
6
Shelf Space
5
5
5
10
10
10
Weekly Sales
1.6
2.2
1.4
1.9
2.4
2.6 Store
7
8
9
10
11
12
Shelf Space
15
15
15
20
20
20
Weekly Sales
2.3
2.7
2.8
2.6
2.9
3.1

Compute the value of the sample correlation coefficient between weekly sales and shelf space.

A. 0.684

B. 0.827

C. 0.652

D. 0.308

Question 9 of 10
1.0 Points
The marketing manager of a large supermarket chain would like to use shelf space to predict the sales of pet food. For a random sample of 12 similar stores, she gathered the following information regarding the shelf space, in feet, devoted to pet food and the weekly sales in hundreds of dollars. Use these data to answer questions 8 through 10. Store
1
2
3
4
5
6
Shelf Space
5
5
5
10
10
10
Weekly

## Related

• ###### Stat 200 Final Exam
1888 words | 8 pages
• ###### Student
1333 words | 6 pages
• ###### Human Sexuality Notes
3622 words | 15 pages
• ###### P&G, Light Duty Liquid Detergents
2280 words | 10 pages
• ###### Bc3030 Wk 2 Coding Test
3723 words | 15 pages
• ###### Statistics
3486 words | 14 pages
• ###### Dumbest Generation Analysis
3046 words | 13 pages
• ###### Hesi Hypertension
5241 words | 21 pages
• ###### Final Study Guide
5579 words | 23 pages
• ###### Bank of Queensland Research Paper Banking Industry
21329 words | 86 pages