Computational Statistics

According to an estimate, the average earnings of female workers who are not union members are $415 per week and those of female workers who are union members are $422 per week. Suppose that these average earnings are calculated based on random samples of 1000 female workers who are not union members and HOD female workers who are union members. Further assume that the standard deviations for these two samples are $59 and $27, respectively. 3. Construct a 93% condence interval for the difference between the two population means. Round your answers to one decimal place. The 93% condence interval for the difference between the two population means is $ a: to $ eTextbook and Media b. Find the value of the test statistic 2. Test at the 2% signi cance level whether the mean weekly earnings of female workers who are not union members are different from those of female workers who are union members. Round your answer to one decimal place. The value of the test statistic z is a: . We conclude that the mean weekly earnings are eTextbook and Media