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The following questions require full answers. You must use correct notation and show all steps in your work. 1. (4 marks) Suppose A and B

The following questions require full answers. You must use correct notation and show all

steps in your work.

1. (4 marks) Suppose A and B are two events from a sample space with P(A) = 0:55, P(B) = 0:20.

(a) Find P(AorB) if X and Y are mutually exclusive (disjoint) events.

(b) Find P(AorB) if X and Y are independent events.

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