Determine μ xˉ aˉ and σ xˉ −

from the given parameters of the population and the sample size. Round the answer to the nearest thousandth where appropriate.
μ=77,σ=15,n=25 μ xˉ ​ =77,σ xˉ ​ =3 μ xˉ =77,σ xˉ ​ =15 μ xˉ =15.4,σ xˉ =3 μ xˉ =77,σ xˉ ​ =0.6 Determine μ xˉ −​ and σ xˉ −

from the given parameters of the population and the sample size. Round the answer to the earest thousandth where appropriate. μ=31,σ=6,n=13 μ xˉ =31,σ xˉ ​ =6 μ xˉ =31,σ xˉ =1.664 μ xˉ =31,σ xˉ =0.462
μ xˉ =17.898,σ xˉ =1.664