1 Subcompact Compact 23 2 300 400 3 310 430 4 290 450 50 5 280 200 6 250 350 7 200 240 8 330 330 9 240 220 10 280 230 11 240 200 12 200 280 13 220 400 14 280 500 15 210 200 16 200 130 17 220 130 18 240 19 210 20 205 21 290 22 100 23 280 24 200 25 140 26 230 27 220 28 200 29 170 30 130 21
1 Subcompact Compact 23 2 300 400 3 310 430 4 290 450 50 5 280 200 6 250 350 7 200 240 8 330 330 9 240 220 10 280 230 11 240 200 12 200 280 13 220 400 14 280 500 15 210 200 16 200 130 17 220 130 18 240 19 210 20 205 21 290 22 100 23 280 24 200 25 140 26 230 27 220 28 200 29 170 30 130 21
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter10: Sequences, Series, And Probability
Section10.7: Distinguishable Permutations And Combinations
Problem 13E
Related questions
Question
- Digital cameras have taken over the majority of the point-and-shoot camera market. One of the important features of a camera is the battery life, as measured by the number of shots taken until the battery needs to be recharged. The “Digital Camera” data in Chapter 10_HW_Data.xls contains the battery life of 29 subcompact cameras and 16 compact cameras (data extracted from “Digital Cameras,” Consumer Reports, July 2009, pp.28-29).
- Assuming that the population variances from both types of digital cameras are equal, is there evidence of a difference in the mean battery life between the two types of digital cameras (α = 0.05)?
- Determine the p-value in (a) and interpret its meaning.
- Is there evidence of a difference in the variability of the battery life between the two types of digital cameras? (use α = 0.05)
- Based on the results of (c), which t test should you use to compare the mean battery life of the two types of cameras?
Transcribed Image Text:1 Subcompact Compact
23
2
300
400
3
310
430
4
290
450
50
5
280
200
6
250
350
7
200
240
8
330
330
9
240
220
10
280
230
11
240
200
12
200
280
13
220
400
14
280
500
15
210
200
16
200
130
17
220
130
18
240
19
210
20
205
21
290
22
100
23
280
24
200
25
140
26
230
27
220
28
200
29
170
30
130
21
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