A random sample of 500 workers engaged in research and development during 1982 is selected. Of these
Question: A random sample of 500 workers engaged in research and development during 1982 is selected. Of these, 178 earn over $36,000 per year. Of the 450 workers in R&D studies during 1983, 220 earn in excess of $36,000 per year. Find the 95% confidence interval for the difference between the 1982’s and 1983’s proportion of workers who earn over $36,000.
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Solution Format: Word Document
Solution Format: Word Document
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