Your agents are complaining about customer retention again. You survey 913 customers and find that 577 plan to renew with you. What is the lower bound for the 99% confidence interval for the proportion of customers that plan to renew? Please round your answer to 2 decimal places. Please use the following z-scores: 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