A new computer operating system was designed so that it does not need as many updates as
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A new computer operating system was designed so that it does not need as many updates as the current operating system. A random sample of the number of updates for each operating system over the course of 12 months is given in Table 5.19.
a. Does the current operating system require more updates than the new operating system?
b. How big of a sample would be needed to detect a mean difference of at least three updates over the course of a 12-month period?
Table 5.19
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