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A survey by a national association is designed to estimate the proportion of member organizations that...

A survey by a national association is designed to estimate the proportion of member organizations that have both talent and development programs in place to drive​ human-capital management as well as the member​ organizations' mean annual employee turnover cost. A random sample of 100 member organizations reveals the​ following:

Frontline employee turnover​ cost: X overbar =​$12,100​, S=​$900. Forty-four member organizations have both talent and development programs in place to drive​ human-capital management.

a) Construct a 90​% confidence interval estimate for the population mean frontline employee turnover cost of member organizations.

b) Construct a 90% confidence interval estimate for the population proportion of member organizations that have both talent and development programs in place to drive​ human-capital management.

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