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beks73 [17]
3 years ago
15

A and B are independent events if...

Mathematics
2 answers:
EastWind [94]3 years ago
8 0
<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

OlgaM077 [116]3 years ago
7 0

Answer:

(C) The probability of buying bread and cheese is 0.12

Step-by-step explanation:

P(Event A) = 0.6

P(Event B) = 0.2

If Event A and Event B are independent,

Then P(Event A and Event B) = 0.6 x 0.2 = 0.12

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