Question: 18 . ( Ch 9 4 ) True or False ? For a sample of 9 items , the critical value of Student's t for

 18 . ( Ch 9 4 ) True or False ?

18 . ( Ch 9 4 ) True or False ? For a sample of 9 items , the critical value of Student's t for a left - tailed test of a mean at a = 0.05 is - 1.860

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