Question: An insurance company is trying to determine if there is a significant difference in the average number of sick days that registered nurses and nurse practitioners use per year. The data analysis provided the following output.

Two sample T for registered nurses vs nurse practitioners

N Mean StDev SE Mean

Registered nurses 180 10.5 10.0 0.74

Nurse practitioners 180 13.2 4.68 0.35

T-Test mu registered nurses = mu nurse pract: T = 1.12 P-value = 0.89

Is there a statistically significant difference at 0.05 in the average number of sick days used by these two different groups of nurses? State your conclusion.