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YouTube T2-12 The p value is the exact significance level

Nicole Seaman

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The p value is the area in the rejection region(s). In this example, we observe a sample mean of +15 bps and our null hypothesis is that the "true" population mean is zero. The corresponding p value of 2.36% is the exact (i.e., lowest) significance level at which we can reject the null. Put another way, we can reject the null with up to 97.64% confidence.

David's XLS: http://trtl.bz/030518-yt-p-value-xls

 
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