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A manufacturer claims that the lifetime of a certain brand of batteries produced by his factory has a variance of 500 hours. A sample size 26 has a variance of 7200 hours. Assuming that it is reasonable to treat these data as a random sample from a normal population. Let us manufacturer's claims at 0.02 level of significance.
3 years ago

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Mulenga
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3 years ago
Mulenga
I just wanted a answer
3 years ago

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