Suppose that X is a normal random variable with mean = 50.1 and standard deviation %3D 0 = 10.4. Let denote the variable for the process of taking a random sample and calculating the sample mean (We...

Extracted text: Suppose that X is a normal random variable with mean = 50.1 and standard deviation %3D 0 = 10.4. Let denote the variable for the process of taking a random sample and calculating the sample mean (We called this the sampling distribution of the sample mean). Suppose that the sample size is 26. Calculate the standard deviation of the sampling distribution of the the sample mean (also called standard error and denoted as ). Enter your answer to three decimal places.