Question

Max tossed a fair coin 3 times. What is the probability of getting heads in the first two trials and tails in the last trial?

A. 4/8
B. 3/8
C.2/8
D.1/8

Answer 1

it is either b or c

Answer 2

but i am leaning towards b

Answer 3

He's doing three trials

Answer 4

I'd go with B as well

Answer 5

I am meaning a or b

Answer 6

me two

Answer 7

@nmcclure17
Pick B

Answer 8

okay thanks
What are you going to say @ospreytriple ?

Answer 9

Since each toss is an independent event, you multiply the probabilities for each together, i.e.\[P(HHT)=P(H)\times P(H)\times P(T)\] And you probably know the probability of getting a head or a tail on one coin flip.

Answer 10

ya its 1/2

Answer 11

Nope. Try again. What's the probability of getting a head on the first toss?

Answer 12

1/3?

Answer 13

Sorry, I might have misunderstood you last comment. You were meaning that the probability of getting a head (or the probability of getting a tail) on each toss is 1/2?

Answer 14

If that's what you meant, then you're correct. Now multiply the three probabilities together to get the overall probability.

Answer 15

1/8

Answer 16

@ospreytriple ??

Answer 17

You're correct. Good job. Sorry, I lost my connection.

Answer 18

oh its okay thanks :)