cpb-us-e1.wpmucdn.com · created date: 3/13/2014 9:54:53 am
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PGroves
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Notice this is a 2-tail test so you need the p-values for BOTH the lower & upper tails.
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Only the p-values for ONE of the tails.
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P-value=tcdf(3.286,e99,14)=.0027*2=.0054>.005
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P-value=.0025*2 .005≥=005 tcdf(3.326,e99,14)
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Statistically significant when our P-value is less than the chosen significance level (α), the result is statistically significant.
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P(Type 2) =P(fail to reject Ho given Ho is false)= 15/140
