SOLUTION: I am lost on probability and don't understand it. " A coin is tossed and an eight-sided die numbered 1 through 8 is rolled. Find the probability of tossing a head and then rolli

Algebra ->  Probability-and-statistics -> SOLUTION: I am lost on probability and don't understand it. " A coin is tossed and an eight-sided die numbered 1 through 8 is rolled. Find the probability of tossing a head and then rolli      Log On


   



Question 1037090: I am lost on probability and don't understand it.
" A coin is tossed and an eight-sided die numbered 1 through 8 is rolled. Find the probability of tossing a head and then rolling a number greater than 4. "

Answer by Edwin McCravy(20054) About Me  (Show Source):
You can put this solution on YOUR website!
"A coin is tossed and an eight-sided die numbered 1 through 8
is rolled. Find the probability of tossing a head and then
rolling a number greater than 4."
On the average about half of the times you toss the coin you will 
toss a head.

The sides of the die are 1,2,3,4,5,6,7,8.
Four of those are greater than 4.

On the average four times out of 8 you will roll a 5,6,7, or 8. 
Four times out of 8 is 4/8 or 1/2.  So half the time you will
roll a number greater than 4.

So 1/2 of the times you will get a head on the coin.
And 1/2 of THOSE times you will also roll a number greater than 
4 on the die.

That's one-half of one-half of the times.  That's

1%2F2%22%D7%221%2F2 %22%22=%22%22 1%2F4

So one-fourth of the time you will get a head on the coin and a
number greater than 4 on the die.

Answer: 1%2F4

Edwin