Question

Help

Answer 1

@mathmate

Answer 2

please help me

Answer 3

@LindseyHope123
Do you know what kind of diagram is shown in the questoin?

Answer 4

a tree diagram

Answer 5

Good! Can you tell me what the (empty) highlighted fraction is supposed to represent?

Answer 6

the fraction of the pennies from the second coin?

Answer 7

Close,but not close enough!
A tree diagram in probability is to represent the probability of particular outcomes at each node (where the fractions are).

Take the example above, 1/2 on the top line is the probability that the outcome will take this line.The resulting outcome is head, with a probability of 1/2.
The same goes for Tail.
Following so far?

Answer 8

yes

Answer 9

What happens if we make a second throw?
Can you complete the tree diagram?

Answer 10

so would i divide 1/2 again from the 1/2

Answer 11

Yes, but more like multiply.
So how many branches after the second toss?
Can you complete the diagram?

Answer 12

so it would be 1/4 and there would be 3 branches?

Answer 13

There would be four branches, like this:

so that each possible outcome has a branch.

Answer 14

To summarize,
- probability of outcome is the product of probabilities of the branch and the previous probability.
- there should be a branch for every outcome
- the total of probabilities of outcomes for each step should be one.
Example:
after first step, 1/2+1/2=1
after second step: 1/4+1/4+1/4+1/4=1
Are you following?