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Cell phone batteries claims their new battery

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Reference no: EM131094154

A company that produces cell phone batteries claims their new battery last more than 30 hours.

To investigate this claim a consumer advocacy group collected the following random sample for number hours that each battery worked:

50, 40, 35, 25, 60, 55, 30, 50, 30, 20.

Is there a sufficient evidence to accept the company's claims using 0.01 significance level?

Reference no: EM131094154

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