A computer software vendor claims that a new version of its operating system will crash fewer...
A computer software vendor claims that a new version of its operating system will crash fewer than 6 times per year, on average.
Suppose a systems operator installs the operating system on on a random sample of 41 computers. At the end of the year, the sample average number of crashes is 7.1, with a standard deviation of 3.6 . Can you conclude that the vendor's claim is false? use 0.05 significance level.
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