Construct a 98 % confidence interval to estimate the average age of all the engineering in this company.

Posted on 2013-10-16 15:23:00 in Statistics by MAKKROV_747

A study is conducted in a company that employs 800 engineers. A random sample of 50 engineers reveals that the average sample age is 34.3 years. Historically, the population standard deviation of the age of the company’s engineering is approximately 8 years. Construct a 98 % confidence interval to estimate the average age of all the engineering in this company. 

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