Question: The mean vacancy rate for apartment rentals in the United States is 10% with a standard deviation of 4.6. An urban studies major obtained a

The mean vacancy rate for apartment rentals in the United States is 10% with a standard deviation of 4.6. An urban studies major obtained a sample of 15 rustbelt cities and found that the mean vacancy rate was 13.3%. What statistical test should she use to see if the mean vacancy rate for these cities differs from the U.S. average?

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