SOLUTION: the probability of a 65 year old person wearing glasses is 76%. the probability of a 65 year old having some hearing loss is 68%. suppose that 10% of 65 year olds who have a hearin

Question 1141732: the probability of a 65 year old person wearing glasses is 76%. the probability of a 65 year old having some hearing loss is 68%. suppose that 10% of 65 year olds who have a hearing loss do not wear glasses. a 65 year old person is selected at random.
A.) Determine the probability of this person wearing glasses and not having a hearing loss.
B.) Determine the probability of this person not wearing glasses and not having a hearing loss.
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
Take 1000 people >65
760 wear glasses
680 have hearing loss
-------------G-----------NG----Total
HL----------612-----------68----680
No HL-------148--------- 172----320
total------760----------240----1000
The first one has a probability of 148/1000 or 0.148
The second one is 0.172
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