Question

We toss 3 coins 100,000 times. How many times do we expect to see "Exactly 1 Head" appearing?

A. 12,500
B. 37,500
C. 3,750
D. 50,000

Answer 1

u there?????????????

Answer 2

Ok, so what do you think?

Answer 3

I have no idea i dont want to have to make a HUGE table.. >.<

Answer 4

oh, no I agree.

Answer 5

But what if we find the probability of just getting 1 head with 3 coins

Answer 6

i/3rd

Answer 7

1/3rd sowee bout that ^^

Answer 8

You sure?

Answer 9

wait no im not :P

Answer 10

1/8th?

Answer 11

3/8 isnt it ? im

Answer 12

a little lost >.<

Answer 13

Well, I agree that the total number of outcomes for 3 coins is 8. And if only one is heads it could be the first, the second, or the third coin that lands heads. So I agree 3/8 makes sense

Answer 14

So what is that as a percentage probability?

Answer 15

isnt that 37.5%?

Answer 16

So then it would be B wouldnt it? :D

Answer 17

Yes. So doesn't that mean in 100 throws of 3 coins we should have 37.5 times just having 1 head. So in 100 thousand it should be 37.5 thousand. Yes, the answer is B

Answer 18

because 100,000 / 8 * 3 = 37500

Answer 19

correct?

Answer 20

That is another way to think about it yes =)

Answer 21

Alrighty :) Thanks!