What is the mu from the given information Sample size n47 Si

What is the (mu) from the given information?

Sample size: n=47

Sigma: =12.6

Not normally distributed population

Solution

cannot be inferrred from this information, we can calculate standard error though. We can construct a confidence interval for the true mean using z (std normal). Normality is confirmed by CLT (high sample size) and true standard deviation is known (given)