based on the 2017-2018 average starting teacher salaries by state measured by nea, the average starting salary for teachers in virginia is $40,453, the sample size is 5,625 and the standard deviation is $606.79. we also know that the average starting salary for teachers in arkansas is 33,323, the sample size is 4,489. if the 95% confidence interval for the true average starting salary for teachers in arkansas is (33313.25, 33332.75), what is the value of standard deviation for this state reported by nea?
