Link: http://i43.tinypic.com/mu7dzn.jpg
This is the most confusing chapter out of all the chapters. I really appreciate it if you can help me through these problems. Thank you so much.
Link: http://i43.tinypic.com/mu7dzn.jpg
This is the most confusing chapter out of all the chapters. I really appreciate it if you can help me through these problems. Thank you so much.
I've put my answers in spoiler tags, I hope you'll try to work them out for yourself
1. This means the chance of A happening. In this case rolling a 1, 2 or 3 of a 6 sided die.
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2. This is the chance of A or B happening and is equal to
P(A U B) = P(A) + P(B) - P(A)P(B)
Spoiler:
3. P(A n B) = P(A)P(B) and it's the chance of both happening
Spoiler:
4. This means the chance of b not happening and so it is equal to 1-P(B)
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5. This one means the chance of a happening and b not happening:
Spoiler: