Calculate each probability for smoking by race for males
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Refer to the contingency table shown below. (a) Calculate each probability (i-vi) and explain in
words what it means. (b) Do you see evidence that smoking and race are not independent?
Explain. (c) Do the smoking rates shown here correspond to your experience? (d) Why might
public health officials be interested in this type of data? (Data are from Statistical Abstract of the
United States, 2001, pp. 12 and 16. Note: Actual statistics are applied to a hypothetical sample of
1,000.) Smoking2
i. P(S) ii. P(W) iii. P(S | W)
iv. P(S | B) v. P(S and W) vi. P(N and B)
Smoking by Race for Males Aged 18-24
Smoker Nonsmoker
(S) (N) Row Total
White (W) 290 560 850
Black (B) 30 120 150
Column Total 320 680 1,000
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Solution Summary
The solution calculates each probability for smoking by race for males.
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Calculate each probability
Refer to the contingency table shown below.
(a) Calculate each probability (i-vi) and explain in words what it means.
(b) Do you see evidence that smoking and race are
not independent? Explain.
(c) Do the smoking rates shown here correspond to your
experience?
(d) Why might public health officials be interested in this type of data? (Data are from Statistical Abstract of the United States, 2001, pp. 12 and 16. Note: Actual statistics are applied to a hypothetical sample of 1,000.)
Smoking2
i. P(S) ii. P(W) iii. P(S | W)
iv. P(S | B) v. P(S and W) vi. P(N and B)
Smoking by Race for Males Aged 18-24
Smoker Nonsmoker
(S) ...
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