Travis Smith: my resume, bio and photos back to the main blog page

Whoever gets the most correct answers, or closest to the correct answers, for these questions, gets a free copy of Dreamweaver 8 All-in-One desk reference, retail value $45 Canadian.  Plus that person will get recognition from me as being really really smart.

1. A cab was involved in a hit and run accident at night. Two cab companies, the Green and the Blue, operate in the city. You are given the following data:

85% of the cabs in the city are Green and 15% are Blue.

A witness identified the cab as Blue. The court tested the reliability of the witness under the same circumstances that existed on the night of the accident and concluded that the witness correctly identified each one of the two colors 80% of the time and failed 20% of the time.

What is the probability that the cab involved in the accident was Blue rather than Green?  (Please feel free to estimate if you’d like.)

2. You have two ropes, two sticks, and a lighter. You know that if you light the rope, it will take one hour to burn.  However, it doesn’t necessarily burn at the same rate all hour long.  It might burn slowly for 55 minutes, then consume the rest of the rope in 5 minutes.

You need to know when exactly 15 minutes has elapsed.  How do you do it?



 
 

 

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Overheard

“The sad truth is that most evil is done by people who never make up their minds to be good or evil.”

...who said it?

“Almost every American I know does trade large portions of his life for entertainment, hour by weeknight hour, binge by Saturday binge, Facebook check by Facebook check. I’m one of them. In the course of writing this I’ve watched all 13 episodes of House of Cards and who knows how many more West Wing episodes, and I’ve spent any number of blurred hours falling down internet rabbit holes. All instead of reading, or writing, or working, or spending real time with people I love.”

...who said it?

“Live a good life. If there are gods and they are just, then they will not care how devout you have been, but will welcome you based on the virtues you have lived by. If there are gods, but unjust, then you should not want to worship them. If there are no gods, then you will be gone, but will have lived a noble life that will live on in the memories of your loved ones.”

...who said it?

“I play with variables constantly.”

...who said it?

“Only the person who has learned Continual Love coming from a heart of Gratitude/Worship can effectively deal with the problem of loneliness.”

...who said it?

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