The American Express Retail Index states that the average U.S. household will spend $2747 on home improvement projects this year. Suppose a large national home improvement company wants to test that figure in the West, theorizing that the average might be lower in the West. The research firm hired to conduct the study arrives at the results shown here. Analyze the data and explain the results. Comment on any substantivefindings.

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One-Sample Z Test of mu = 2747 vs < 2747 The assumed standard deviation 1557 95% Upper Mean SE Mean Bound N 67 2349 190 2662 -2.09 0.018