Statistics Hypothesis Testing Chapter
Could you please double check and let me know if the way you have calculated Pooled Variance is correct. I can see that the formula is correct but when I do the calculation in excel I get a different answer. I'm pretty sure the calculation that has been done in the Excel files for pooled variance is not correct. Example of this is question 6 of practice exam 4 at the end of the Hypothesis Testing Chapter of the course.
See screen shot below. The formula is correct but when I calculate I dont get the same answer as outlined in red in the attached image.
Look forward to hearing clarification.
My formula in Excel is also attached as image.
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See screen shot below. The formula is correct but when I calculate I dont get the same answer as outlined in red in the attached image.
Look forward to hearing clarification.
My formula in Excel is also attached as image.

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