Why I am Getting Error Calculating Pooled Variance
There was a question we were to solve. One step was calculating pooled variance for calculating the difference in the confidence interval, but it showed an error; after reviewing the answer& the way to solve it, I retried, but no luck. Can anyone help to point out how to solve in excel?
The correct explanation:
My approach, please help
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can you explain why the last answer is the right one but not the first option???
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