APFIVE Calculating Joint Probability
Which of the following is true regarding the joint probability that a test-taker chooses ‘answer ©’ and scores between 80 and 100, if 70 out of 1000 test-takers meet this criterion?
A
The joint probability is $$\frac{100}{1000} = 0.10$$.
B
The joint probability is $$\frac{70}{1000} = 0.07$$.
C
The joint probability is $$\frac{350}{1000} = 0.35$$.
D
The joint probability is $$\frac{140}{1000} = 0.14$$.
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