Smoking State Public Health Officials Claim That 18% of Adults

question 63

Essay

Smoking State public health officials claim that 18% of adults currently smoke cigarettes.
a. We start selecting a few adults at random, asking each if he or she is a smoker. Explain
why these can be considered Bernoulli trials.
b. How many people do you expect to have to ask in order to find a smoker?
c. Let X represent the number of smokers among a randomly chosen sample of 30 adults.
What is the probability model for X? Name the model (including its parameters) and
specify the mean and standard deviation of X.
d. What is the probability that there are at least 8 smokers among our sample of 30 people?

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Definitions:

Pulmonary Veins

The blood vessels that carry oxygenated blood from the lungs back to the left atrium of the heart.

Venae Cavae

The two significant veins, known as the superior and inferior, which transport deoxygenated blood from the body back to the heart.

Pulmonary Veins

The veins that carry oxygenated blood from the lungs back to the left atrium of the heart.

Systemic Circuit

The part of the cardiovascular system which carries oxygenated blood away from the heart to the body, and returns deoxygenated blood back to the heart.