Angel_lis

03-07-2010, 01:39 PM

I have the following problem from my home problem.

An oil-prospecting firm hits oil or gas on 10% of its drillings. If the firm drills two wells, the four possible events and three associated probabilities are shown below.

Out come of 1st drilling

There are 4 events

1 Hit (oil or gas)

2 hit

3. miss

4 miss

Outcome of 2nd drilling

there are also 4 events

1 Hit (oil or gas)

2 Miss

3 Hit

4 miss

Construct a tree diagram to represent this experiment.

I just wonder if someone can help me how to approach to draw a tree diagram.

An oil-prospecting firm hits oil or gas on 10% of its drillings. If the firm drills two wells, the four possible events and three associated probabilities are shown below.

Out come of 1st drilling

There are 4 events

1 Hit (oil or gas)

2 hit

3. miss

4 miss

Outcome of 2nd drilling

there are also 4 events

1 Hit (oil or gas)

2 Miss

3 Hit

4 miss

Construct a tree diagram to represent this experiment.

I just wonder if someone can help me how to approach to draw a tree diagram.