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S2 hypothesis testing help!!!!

Okay so I need help on hypothesis testing, when I try to find out my critical region, and the value I obtain is in between two values in the table, which one should I choose the one above or the one below??? Please help!!!
Depends what your statistic is and whether it matters :P if your statistic is between the two (quite unlikely) then you could just use some kind of linear interpolation to find a rough critical value.

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