1 Deducing p-values from t-values - Dept. of Statistics ...

The t-value is t= 224:23 227 1:58 = 1:75: The alternative is pointing to the left, therefore the p-value is the area to the left of -1.75. Here we need to use the symmetry of the t-distribution, since-1.75 lies between -1.77 and -1.35, the area to the left of -1.75 is between 5 ................
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