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What is the null hypothesis and alternative hypotheses

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Reference no: EM132422231

An independent consumer group published its findings and lifetimes of electric bills manufactured by big corporations are approximately normally Distributed with a mean of 690 days and the variance of 15,500.25 big corporation claims that the variance and it's electric bulbs is less than 15,500.25 supposedly trying to carry out a hypothesis test to see if BIG Corporations claim is correct what is the null hypothesis and alternative hypotheses.

Reference no: EM132422231

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