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

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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.

X1 = 405 X2 = 412 %3D X3 = 399 %3D X4 = 420 X5 = 430 X6 = 428 %3D %3D %3D


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

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


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