The following table lists the joint probabilities associated with smoking and lung disease among 60-to-65 year-old men. Smoker. Non Smoker
Has Lung Disease 0.1 0.03
No Lung Disease 0.18 0.69

One 60-to-65 year old man is selected at random. What is the probability of the following events:
a) He has lung disease given that he is a smoker
b)He has lung disease given that he does not smoke:

percentage - 25%

probability - 0.25

we know,

total amount of students in class = 20

total boys = 10

total girls = 10

no of girls who wear glasses = 10/2 = 5

probability of choosing a girl with glasses is =

number of girls wearing glasses/total number of students in the class = 5/20

thus, percentage of selecting a girl wearing glasses will be

= 5/20 × 100

= 5 × 5

25%

therefore,

probability will be 0.25

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step-by-step explanation: