Depending on the type of the hypothesis test (one-tailed or two-tailed), you have to decide if you need to multiply p-value by 2. But I'd rather divide the level of significance by 2. So, if it's a one-tailed test (< or >) then you don't have to divide or multiply anything, just look up the p value and compare it to the level of significance. If it's a two tailed test (=), then find the p-value and compare it to the level of significance divided by 2 (alpha/2). In your example, I'd find p-value (0.0082) and compare it to 0.025 (0.05/2).

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btw, take a look at this: http://cnx.org/content/m17025/latest/hyptest22_cmp1.png