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 file contains the battery life of 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 median battery life between subcompact cameras and compact cameras? (Use α = 0.05.)
b. What assumptions must you make in (a)?
c. Compare the results of (a) with those of Problem 10.11 (a) on page 376. Discuss.