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Thomas collected 29 responses to a survey and used a twotailed test to establish a significance level of 0.20 and calculate a 90% confidence interval.

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Thomas collected 29 responses to a survey and used a twotailed test to establish a significance level of 0.20 and calculate a 90% confidence interval. Using the t-table (located in the tutorial), what is the critical t-value used for calculating a 90% confidence interval with 28 degrees of freedom? Answer choices are rounded to the thousandths place

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