Hemoglobin (g percent) values were recorded for a sample of 20 children who were part of a study of acute leukemia. The variance of the observations...

Hemoglobin (g percent) values were recorded for a sample of 20 children who were part of a study of

acute leukemia. The variance of the observations was 5. Do these data provide sufficient evidence to

indicate that the population variance is greater than 4? Let alpha=0.05