It is assumed that the life of the bulbs is normally distributed test the null hypothesis that the samples were obtained from populations with equal variance, considering %, considering the following information:

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- October 4th 2010, 03:38 PMApprentice123Hypothesis Test
It is assumed that the life of the bulbs is normally distributed test the null hypothesis that the samples were obtained from populations with equal variance, considering %, considering the following information:

- October 4th 2010, 04:39 PMpickslides
You need to test that there is no difference in mean bulb life between the 2 populations

Now use a t-test for difference in means.

Are you firmiliar with this test? - October 5th 2010, 05:14 AMApprentice123
- October 5th 2010, 05:29 AMCaptainBlack