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The manufacturer of a particular battery pack for laptop computers claims its battery pack can function for 6 hours, on the average, before having to

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The manufacturer of a particular battery pack for laptop computers claims its battery pack can function for 6 hours, on the average, before having to be recharged. A random sample of 32 battery packs was selected and placed on test. The mean functioning time before having to be recharged was 7.5 hours with a standard deviation of 1.7 hours. A competitor claims that the manufacturer's claim is not correct. Perform the appropriate test of hypothesis to determine whether the competitor is correct. Test using a significance level of 0.05

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