Below is a repost of material originally posted on September 17, 2009.
Some of the dates on the source material are getting a little old, but I still think most of the questions are fun.
It is one of my favorite posts, so I thought I’d present it again in case you missed it (I’ve made some minor changes to format.).
Photo Credit: Piulet
Let’s see how you do on the following 10 questions.
- More people die due to homicide than by suicide in the United States. True or False.
- Put the list in order, from highest to lowest, by the rate that they cause injury death in the United States?
- Motor Vehicle Traffic
- Act of War / Terrorism
Suppose you are a contestant on a game show in which you are confronted with three doors. Behind one door is a fabulous prize, while behind the other two doors there is nothing.
Your task is to pick the door with the prize.
The host allows you to pick a door.
After you choose a door, but before you get to see what’s behind it, the host will open one of the other two remaining doors that doesn’t have a prize behind it. This eliminates that door from the situation.
You are then given the option to either stick with your initial choice of door, or switch to the other remaining door.
What are your odds of winning the prize if you choose to stay with your current door?
What are your odds of winning if you choose to switch to the other door?
Suppose there is a rare disease that randomly affects 1 out of every 100,000 people. Although you know it isn’t likely that you would have the disease, you want to be sure.
Fortunately there is a test available for the disease that is accurate 99.9% of the time. In other words, there is a 1 in 1000 chance that the test will falsely tell a healthy person that they have the disease, and a 1 in 1000 chance that it will falsely tell a sick person that they do not have the disease.
You decide to take the test, and unfortunately the result comes back positive – indicating that you have the disease.
What are the odds that the test was correct and you have the disease?
What are the odds that the test was wrong and you don’t have the disease?
Suppose you run into a friend who you have not seen in many years. While discussing what’s been going on in your lives since you last met, your friend says that she has given birth to non-identical twins.
You ask your friend “Is one of the twins a boy?” and she answers “Yes”.
You then ask “Is the other twin a girl?”
What are the odds that the person will answer yes, the other twin is a girl?
What are the odds that the person will answer no, and tell you that the other twin is also a boy?
More women filed for bankruptcy in 2003 than graduated from college. True or False.
Are your lifetime odds of dying due to contact with hot tap water higher than dying due to a lightning strike?
OK, are you more likely to die due to contact with hot tap water or contact with a venomous snake?
One more – more likely to die due to contact with hot tap water or from an earthquake?
How many legs does an elephant have if you count his trunk as a leg?