<h2>
Answer:</h2>
A and B are independent events if:
C. The probability of buying bread and cheese is : 0.12
<h2>
Step-by-step explanation:</h2>
Two events A and B are said to be independent.
if P(A∩B)=P(A)×P(B)
where P denote the probability of an event.
Here,
Event A= A shopper buys bread
and Event B=A shopper buys cheese
Also we have:
P(A)= 0.60 and P(B)= 0.20
If A and B are independent events then,
P(A∩B)=0.60×0.20
i.e.
P(A∩B)=0.12
i.e.If A and B are independent then the probability of buying bread and cheese is: 0.12
Also we know that:
P(A∪B)=P(A)+P(B)-P(A∩B)
If A and B are independent then,
P(A∪B)=0.60+0.20-0.12
i.e.
P(A∪B)=0.68
If A and B are independent then the probability of buying bread or cheese is: 0.68
