Essay
Laptop Battery Average Narrative
The manufacturer of a particular battery pack for laptop computers claims its battery pack can function for 8 hours, on average, before having to be recharged. A random sample of 16 battery packs was selected and tested. The mean functioning time before having to be recharged was 7.2 hours with a standard deviation of 1.9 hours.
-Refer to Laptop Battery Average Narrative. Based on the interval calculated above, can the manufacturer's claim be rejected? Justify your answer.
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