A random sample of 21 state senator elections finds that proportion 0.54 of eligible voters actually vote. What is the upper bound for a 95% confidence interval for the proportion of eligible voters who actually vote? Round your answer to 2 decimal places, and answer as a decimal, not a percentage. Use the appropriate score from below: z-score for a 99% CI = 2.58 z-score for a 98% CI = 2.33 z-score for a 95% CI = 1.96 z-score for a 90% CI = 1.64 T.INV.2T(0.05,20) = 2.086 T.INV.2T(0.05,21) = 2.080 T.INV.2T(0.05,22) = 2.074 T.INV.2T(0.05,23) = 2.069 T.INV.2T(0.05,24) = 2.064 T.INV.2T(0.01,20) = 2.845 T.INV.2T(0.01,21) = 2.831 T.INV.2T(0.01,22) = 2.819 T.INV.2T(0.01,23) = 2.807 T.INV.2T(0.01,24) = 2.797