Question 1121941
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If you add all of the entries in the "number of passengers" column, you get 200.


So the probability of having to wait 15 minutes is *[tex \Large \frac{27}{200}] while the probability of having to wait 45 minutes is *[tex \Large \frac{45}{200}].  Then the ratio of the two probabilities is:


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ \frac{\frac{27}{200}}{\frac{45}{200}}\ =\ \frac{27}{45}]


Reduce the fraction and compare your result to *[tex \Large \frac{3}{5}]
								
								
John
*[tex \LARGE e^{i\pi}\ +\ 1\ =\ 0]
My calculator said it, I believe it, that settles it
<img src="http://c0rk.blogs.com/gr0undzer0/darwin-fish.jpg">
*[tex \Large \ \
*[tex \LARGE \ \ \ \ \ \ \ \ \ \  
								
{{n}\choose{r}}
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