Mathematics, 21.04.2020 23:43, zozo9987

A report on the U. S. economy indicates that 28% of Americans have experienced difficulty in making mortgage payments. A news organization randomly sampled 400 Americans from 10 cities judged to be especially economically depressed and found that 136 reported such difficulty. Does this indicate that the problem is more severe among these cities? What are the correct null and alternative hypotheses for testing such a claim?

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A report on the U. S. economy indicates that 28% of Americans have experienced difficulty in making...