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Use the Student's t distribution to find tc for a 0.90 confidence level when the sample...

Use the Student's t distribution to find tc for a 0.90 confidence level when the sample is 20. (Round your answer to three decimal places.)

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Answer #1

DF = 20 - 1 = 19

At 90% confidence interval the critical value is t0.05, 19 = +/- 1.729

                    

               

                         

                               

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