Researchers measure cholesterol levels in a sample of patients in New Zealand and Asia and find the following results: Region Sample Size Mean Cholesterol Level Standard Deviation (mmol/L) (mmol/L) New Zealand 100 5.4 1.2 Asia 150 4.9 1.3 They calculate the mean and 95% CI for the true difference in mean cholesterol levels between the 2 populations and find: Mean Difference 0.5 mmol/L and 95% CI (0.18-0.82). The 95% confidence interval for the true difference in mean cholesterol levels between 2 populations suggests that