The producer of a particular brand of soup claims that its sodium content is 50% less than that of its competitor.

The food label states that the sodium content measures 410 milligrams per serving. Assume the population of sodium content is normally distributed with a standard deviation of 25 milligrams. Inspectors take periodic samples of 25 cans and measure the sodium content. The following sample means are obtained.

a. Construct an x chart. Plot the sample means on the x chart.

b. Can the inspectors conclude that the producer is advertising the sodium content accurately? Explain.