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August 1, 2014

August 1, 2014

Posted by **Christie** on Thursday, July 12, 2012 at 10:10pm.

- Statistics -
**MathGuru**, Friday, July 13, 2012 at 6:43pmA) I would say the research team cannot conclude that the change of light bulbs increased productivity with the data given. However, check this by using the appropriate hypothesis test.

B) Yes, you can still do a hypothesis test by using one of the tenets of the Central Limit Theorem:

The shape of the sampling distribution increasingly approximates a normal curve as sample size (n) is increased, even if the original population is not normally distributed.

I hope this brief explanation will help.

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