Question 599522
Age 	           Males	Females
65-69	            1.6	         0.0
70-74	            0.0	         2.2
75-79	            4.9	         2.3
80-84	            8.6	         7.8
85+ 	            35.0	27.9
an
Prevalence of Alzheimer's disease (cases per 100 population)

Suppose an unrelated 
77 year old man ::: 0.049 
76 year old woman:: 0.023
82 year old woman : 0.078 

are selected from the community. 

What is the probability that all three of these individuals have Alzheimer’s?
Ans: 0.049*0.023*0.078 = 0.0000879
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Cheers,
Stan H.