Cairns Sample 30, Average 616.19, SD 29.13

Towns Sample 37, Average 585.43, SD 38.72

Use cairns minus towns

1. Determine a point estimate for the value of the difference in average weekly salary between the two groups(in dollars to 2 decimal places).
2. Calculate the standard error for the difference between the means assuming that the workers' salaries in both locations are normally distributed and have the same population variance(in dollars to 2 decimal places).
3. Use Kaddstat to determine a 95% confidence interval for the difference betweenthe average weekly salaries in Cairns and Townsville. lower limitand upper limit