A bottling company uses a machine to fill the bottles with olive oil. The bottles are designed to contain 475 milliliters(ml). In fact, the contents vary according to a normal distribution with a mean...

A bottling company uses a machine to fill the bottles with olive oil. The bottles are designed to contain 475 milliliters(ml). In fact, the contents vary according to a normal distribution with a mean of 473 ml and standard deviation of 3 ml. What is the mean, and standard error of the sample mean of six randomly selected bottles?