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  3. 3. a manufacturer of photographic flash batteries

3. A manufacturer of photographic flash batteries took a sample of 13 batteries from the production...

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Basic Math

3. A manufacturer of photographic flash batteries took a sampleof 13 batteries from the production of any given day and used themcontinuously until they were used up. Battery life in hours untilit ran out was: 342, 426, 317, 545, 264, 451, 749, 631, 512, 266,492, 562 and 298. With a significance level of 0.05, there isevidence that the Battery life is more than 400 hours? (assume thatlife times have normal distribution)

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3 For the given data Create the following tabledatadatameandata    See Answer
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