Question 1087398
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If you have your text book with you, then look up in the back of your book at the T table. Most, if not all, stats books will have reference tables in the appendix or in the chapter somewhere. I can't guarantee it will be there. All books are different.


If you can't find it in your book or you don't have your book with you, then you can use an online resource. I recommend using <a href = "http://www.sjsu.edu/faculty/gerstman/StatPrimer/t-table.pdf">this table</a>. That is the table I will be using.


We have n = 7 as the sample size. Therefore the degrees of freedom (df) is equal to df = n-1 = 7-1 = 6. Using the table I linked previously, locate the df = 6 row. Highlight everything in that row. Then mark the column that has "one tail = 0.05" up at the top. The intersection of this row and column leads to the value 1.943, which is the critical value. 
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