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Answer to Question #45837 in Other Math for Sarah

Question #45837
A city council fire brigade officer claims that it takes, on average 10.9 minutes to reach its destination in emergency calls. To check on this claim, the agency which licenses fire brigade service providers had them timed on 50 emergency calls, getting a mean of 10.3 minutes with a standard deviation of 0.8 minutes. At the level of significance of 0.05, does this constitute evidence that the figure claimed is too high?
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