A statistics student collected data on the prices of the same items at a military commissary and a nearby corporate store. The items were matched for content, manufacturer, and size and were priced separately. a. Report and compare the sample means. b. Assume that they are a random sample of items, and use a significance level of 0.05 to test the hypothesis that the military commissary has a lower mean price. Assume that the population distribution of differences is a Normal. E Click the icon to view the data. a. Calculate the sample means. XCorporate = XNavy =D (Round to two decimal places as needed.)
A statistics student collected data on the prices of the same items at a military commissary and a nearby corporate store. The items were matched for content, manufacturer, and size and were priced separately. a. Report and compare the sample means. b. Assume that they are a random sample of items, and use a significance level of 0.05 to test the hypothesis that the military commissary has a lower mean price. Assume that the population distribution of differences is a Normal. E Click the icon to view the data. a. Calculate the sample means. XCorporate = XNavy =D (Round to two decimal places as needed.)
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:A statistics student collected data on the prices of the same items at a military commissary and a nearby corporate store. The items were matched for content, manufacturer, and size and were priced separately.
a. Report and compare the sample means.
b. Assume that they are a random sample of items, and use a significance level of 0.05 to test the hypothesis that the military commissary has a lower mean price. Assume that the population distribution of differences is approximately
Normal.
E Click the icon to view the data.
a. Calculate the sample means.
XCorporate
XNavy =L
(Round to two decimal places as needed.)
Transcribed Image Text:More info
Corporate
Store
Military
Commissary
Item
1
18.26
16.98
2
4.47
2.65
4.98
5.57
4
8.12
6.0
2.88
2.66
6
3.88
4.36
4.09
3.07
7
4.98
8
3.56
4.08
2.82
10
4.27
2.78
11
1.58
0.89
12
5.98
2.93
13
2.24
1.77
14
6.22
4.73
15
3.07
5.25
16
4.27
4.02
17
7.54
7.68
18
1.38
1.26
19
1.08
0.78
20
2.29
2.51
21
0.81
0.65
22
1.73
1.92
23
0.83
0.54
24
3.83
2.64
25
1.87
2.54
26
0.99
0.85
27
2.51
2.31
28
1.43
1.37
29
2.68
1.29
30
1.07
0.99
31
0.65
0.64
32
1.58
1.31
-...i
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