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Up until 2015, the SAT had a "guessing penalty". Consider an exam with 40 questions each with six possible choices. Only one is
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1. Option 2 is correct. The value of p corresponds to the arrival probability of the merged Bernoulli process. 2. Option 4 is correct. Note that for all of the first three options, the process is a Markov chain. Thus, it suffices to argue that the process
1. fR(r)= 2/((r+1)^2) 2. E[R]= 0.38629436112
1. P(lnH≥z1)= 1-e^z*ln(3/2) 2. fZ(z)= 1
