Question: If we want to construct a two-sided confidence interval, what is the critical value for a 70% confidence interval for a t-interval with 20degrees of

If we want to construct a two-sided confidence interval, what is the critical value for a 70% confidence interval for a t-interval with 20degrees of freedom?

Note: Round to the nearest thousandth

i know I start with subtracting 100-70=30= 1.036

do i use the table for 20 degrees of freedom

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