In a survey of 839 human resource professionals concerning challenges they faced in the​ workplace, 331 said that employee​ retention/turnover was an important challenge and 187 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.

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