Answer:
, so this events are dependent.
Step-by-step explanation:
Two events, A and B, are independent if:
In this problem, we have that:
Event A is being a heavy coffee drinker.
Of 10,000 people surveyed, 3,300 were "heavy coffee drinkers'. This means that
Event B is having cancer of the pancreas. Of 10,000 people surveyed, 160 had cancer of the pancreas. So .
is having cancer of the pancreas and being a heavy coffee drinker. Of 10000 people, 137 had cancer of the pancreas and were heavy coffee drinkers. So .
Now we verify if the equality is satisfied:
, so this events are dependent.