what is probablity of successfully answerig a multiple choice question with a pure guess if there are four answers to choose from?
2007-04-14 06:05:03 · 8 answers · asked by reejabhattarai 1 in Education & Reference ➔ Homework Help
there is a 1in4 chance of being correct ... .. ....
2007-04-14 06:09:45 · answer #1 · answered by melark 5 · 1⤊ 0⤋
25%
But you can, with a little knowledge, rule out 1 or 2 possibilities making the probabilities 33.3% or even 50% Guess intuitively rather than just guess!
2007-04-14 13:14:19 · answer #2 · answered by Anonymous · 0⤊ 0⤋
narrow it down first.
If you can't than you have a 1 out of four (25%) chance of getting is right.
If can get rid of one you have a 1 out of 3 (33%) chance.
Get rid of 2 you have a one out 2 chance (50%)
Don't answer at all and you have a 0% chance of getting it right.
2007-04-14 13:42:50 · answer #3 · answered by GaelicMel 3 · 0⤊ 0⤋
About 50% if you can narrow it down. In my science tests, for example, each choice is one bit different from the real answer, so you can often figure out what the answer is going to be.
eg a) 2ma/(g*g)
b) 8ma/g
c) 8ma/(g*g)
d) 8a/(m*g*g)
So answer would be c.
2007-04-14 13:13:22 · answer #4 · answered by Jenni J 2 · 1⤊ 1⤋
1/4 or 25%. same thing
2007-04-14 13:08:32 · answer #5 · answered by Alen Z 1 · 1⤊ 0⤋
1/4 i think
2007-04-14 15:17:31 · answer #6 · answered by Elizabeth 2 · 0⤊ 1⤋
25% - not that great!
2007-04-14 13:07:58 · answer #7 · answered by your loot 2 · 1⤊ 0⤋
Open these links
Answer is 1
http://www.cim.mcgill.ca/~paul/262S5.pdf
Probability
http://www.mathgoodies.com/lessons/vol6/intro_probability.html
2007-04-14 13:17:47 · answer #8 · answered by LucySD 7 · 0⤊ 1⤋