Cairns Sample 30, Average 616.19, SD 29.13
Towns Sample 37, Average 585.43, SD 38.72
Use cairns minus towns
- Determine a point estimate for the value of the difference in average weekly salary between the two groups (in dollars to 2 decimal places).
- 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).
- Use Kaddstat to determine a 95% confidence interval for the difference between the average weekly salaries in Cairns and Townsville. lower limit and upper limit