Question: In a random sample of 80 workers from a factory in Pittsburgh, it was found that 5% were unable to read, while in a random

In a random sample of 80 workers from a factory in Pittsburgh, it was found that 5% were unable to read, while in a random sample of 50 factory workers in Cleveland 8% were unable to read. Can it be concluded that there is a difference in proportions of nonreaders between the two cities? Use alpha = 0.10.

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