In a survey of 813 human resource professionals concerning challenges they faced in the workplace, 318 said that employee retention/turnover was an important challenge and 175 said that employee satisfaction was an important challenge, Complete parts (a) through (c) below. a. Construct a 95% confidence interval estimate of the population proportion of human resource professionals who believe that employee retention/turnover was an important challenge. The 95% confidence interval estimate for the population proportion is Sis (Round to four decimal places as needed.)