Answer:
Women vs. Men:
Sample 1: Women
Sample 2: Men
Age under 40 vs. Age 40 or greater:
Sample 1: Age under 40
Sample 2: Age 40 or greater
Ulcerated tumors vs. Non-ulcerated tumors:
Sample 1: Ulcerated tumors
Sample 2: Non-ulcerated tumors
Explanation:
Women vs. Men:
Sample 1: Women
Sample 2: Men
Age under 40 vs. Age 40 or greater:
Sample 1: Age under 40
Sample 2: Age 40 or greater
Ulcerated tumors vs. Non-ulcerated tumors:
Sample 1: Ulcerated tumors
Sample 2: Non-ulcerated tumors