Use the rule of total probability to find the indicated probability.A teacher designs a test so a student who studies will pass 94% of the time, but a student who does not study will pass 10% of the time. A certain student studies for 90% of the tests taken. On a given test, what is the probability that student passes?
A. 0.1
B. 0.846
C. 0.52
D. 0.856
Answer: D
Mathematics
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A. 
= - 
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= - 
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Mathematics