Question 930728
<table border = 1><tr><td></td><td>Nonsmoker</td><td>Light Smoker</td><td>Heavy Smoker</td><td>Total</td></tr><tr><td>Men</td><td>363</td><td>70</td><td>83</td><td>516</td></tr><tr><td>Women</td><td>385</td><td>88</td><td>90</td><td>563</td></tr><tr><td>Total</td><td>784</td><td>158</td><td>173</td><td>1079</td></tr></table>


It states that "given that the person is a woman". So we are 100% certain that this person selected is a woman. 


We can cross out the other rows and just focus on the "women" row.


There are 563 women total. Of these women, 385 are nonsmokers


Divide: (# nonsmoking women)/(# total women) = 385/563 = 0.6838 which rounds to 0.684


The final answer is <font size=5 color="red">0.684</font>

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