Question: Suppose selected independent random samples of 15 unionized women and 20 nonunionized women in manufacturing and provide the following hourly wage rates.

Union Workers 22.40 18.90 16.70 14.05 16.20 20.00 16.10 16.30 19.10 1650 18.50 19.80 17.00 14.30 17.20

Nonunion Workers 17.60 14.40 16.60 15.00 17.65 15.00 17.55 13.30 1 1.20 1530 19.20 11.85 16.65 15.20 15.30 17.00 15.10 14.30 13." 14.50

1. What is the point estimate of the difference between hourly wages for the two populations?
2. Develop a \(95 \%\) confidence interval estimate of the difference between the two population means.
3. Does there appear to be any difference in the mean wage rate for these two groups? Explain.

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