Solution-Important feature of digital cameras

Important feature of digital cameras

Assignment Help Basic Statistics

Reference no: EM13842845

An important feature of digital cameras is battery life, the number of shots that can be taken before the battery needs to be recharged. The file contains battery life information for 29 subcompact cameras and 16 compact cameras. (Data extracted from "Digital Cameras," Consumer Reports, July 2009, pp. 28-29.)

a. Is there evidence of a difference in the variability of the battery life between the two types of digital cameras? (Use .05)

b. Determine the p-value in (a) and interpret its meaning.

c. What assumption about the population distribution of the two types of cameras is necessary in (a)? Is the assumption valid for these data?

d. Based on the results of (a), which t test defined in Section 10.1 should you use to compare the mean battery life of the two types of cameras?

Subcompact	Compact
300	400
310	450
290	450
280	260
250	350
200	240
330	330
240	220
280	230
240	260
200	280
220	400
280	500
210	200
260	150
220	130
240
210
205
290
160
280
200
140
230
220
200
170
150

Reference no: EM13842845

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Important feature of digital cameras

Reference no: EM13842845

Reference no: EM13842845

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