If the random sample $X _ { 1 } , \ldots \ldots , X _ { n }$ is taken from a normal distribution with mean value $\mu$ and standard deviation $\sigma$ , then regardless of the sample size n, the sample mean $\bar { X }$ is distributed with expected value __________ and standard deviation __________.

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The Answer of If the random sample $X _ { 1 } , \ldots \ldots , X _ { n }$ is taken from a normal distribution with mean value $\mu$ and standard deviation $\sigma$ , then regardless of the sample size n, the sample mean $\bar { X }$ is distributed with expected value __________ and standard deviation __________.

If the Random Sample X1,……,XnX _ { 1 } , \ldots \ldots , X _ { n }X1​,……,Xn​

If the Random Sample $X _ { 1 } , \ldots \ldots , X _ { n }$