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Sagot :
Specifically, 0.0754 likely are infants in at least 3 of 20 households to develop chronic bronchitis if the probability of developing disease in any one household is 0.5
What is chronic bronchitis?
COPD includes a type of chronic bronchitis (chronic obstructive pulmonary disease). A group of lung conditions known as COPD make it difficult to breathe and worsen over time. Emphysema is the other primary type of COPD. Emphysema and chronic bronchitis are present in the majority of people with COPD, but the severity of each condition varies from person to person. Inflammation (swelling) and irritation of the bronchial tubes characterize chronic bronchitis. These tubes serve as the airways that transport air to and from the lungs' air sacs. Mucus accumulates as a result of the tubes becoming irritated. Your lungs have a harder time moving oxygen into and carbon dioxide out of your body as a result of this mucus and the swelling of the tubes.
[tex]P(x \geq 3) = I-P (x < 3)\\ = I - [P(0)+P(1)+P(2)\\P(x) = 20 _{Cx}(0.05)^{x}(0.95)^{20-x}\\P(x \geq 3)=1-(0.3585+0.3774+0.1887)\\P(x \geq 3)=0.0754[/tex]
To learn more about chronic bronchitis
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