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Hypothesis test help
by E.Devitt Leaving Cert Mathematics — 28/05/16 2

I've seen on exam questions that sometimes the standard deviation is put over the square root of the population sample to find the margin of error in the 95% confidence interval. Havent seen that before and I'm wondering why its there???


2 Comments
h.ollie_ — 28/05/16
It's new to the course since 2014
h.ollie_ — 28/05/16
It's not the standard deviation , it's just 1 over the square root of the population sample
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