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Confidence Interval

posted by on .

Hi,

I need some help with a problem. Here is my example that I am studying.

Find a 95% C.I. for the population mean.
Same size 36
N(u, 64)
sample mean 51.8

51.8+-(4/3)(1.96)

Where does the 1.96 come from? 4/3=64/36 so I understand that.

Thanks

  • Confidence Interval - ,

    Never mind. Figured it out.

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