一道统计学的的题 在线等 急 30
Aresearcherwantstoknowwhetherthevarianceofbulbs'lifetimeproducedbyacertainfactoryisgr...
A researcher wants to know whether the variance of bulbs' lifetime produced by a certain factory is greaster than 4 months. A sample of 25 bulbs is selected at random from the factory which produces a mean lifetime of 10 minth with a standard deviation of 3 month.Test the researcher's hypothesis using classical approach and p-value approach .Use α=0.05 .
求解 很急很急 在线等 哪位好心人帮忙解答一下 不胜感激
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求解 很急很急 在线等 哪位好心人帮忙解答一下 不胜感激
要有具体的解答过程
都是乱答的 不说啥了 展开
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