Pancreatic Carcinoma. Pancreatic ductal adenocrarcinoma is the 4th leading cause of cancer death in the U.S. Researchers D. Delbeke et al. published the article “Optimal Interpretation of FDGPET in the diagnosis staging and management of Pancreatic Carcinoma” (The journal of Nuclear Medicine, Vol. 40, No. 11, pp. 1784−1791) on optimizing semi-quantitative interpretation of FDGPET scans. The following table provides summary statistics for the standardized uptake value (SUV) level value with malignant and benign pancreatic lesions.

SUV with malignant SUV with benign x¯1 = 5.1 x¯2 = 0.85 s1 = 2.6 s2 = 1.7 n1 = 52 n2 = 13 At the 1% significance level, do the data provide sufficient evidence to conclude that, on average, SUV with malignance has higher value than SUV with benign?