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I understand how we arrive at 9/10 using the addition rule, but why can I not arrive at the same answer using the joint probability table?
joint prob table at: https://photos.app.goo.gl/8r5L8xKvqEyoVwPbA
From the joint, I would assume the probability of morning or evening: P( morning, not evening) + P(not morning, evening) = 2/5+3/10 = 7/10
P( morning, not evening) + P(not morning, evening) = 2/5+3/10 = 7/10
Is there something I have missed in my reasoning?
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Day 3: Basic Probability Puzzles #8
You are viewing a single comment's thread. Return to all comments →
I understand how we arrive at 9/10 using the addition rule, but why can I not arrive at the same answer using the joint probability table?
joint prob table at: https://photos.app.goo.gl/8r5L8xKvqEyoVwPbA
From the joint, I would assume the probability of morning or evening:
P( morning, not evening) + P(not morning, evening) = 2/5+3/10 = 7/10
Is there something I have missed in my reasoning?