can you please solve this using the TI-84 Plus CE

You intend to estimate a population proportion with a confidence interval. The data suggests that the normal distribution is a reasonable approximation for the binomial distribution in this case. While it is an uncommon confidence level, find the critical value that corresponds to a confidence level of 66.7%. (Report answer accurate to three decimal places with appropriate rounding. ) Zyr1 = 4) 1.488