Students arrive at a professor's office every 20 minutes during final exam week according to a Poisson distribution. What is the probability that the professor's one hour afternoon nap will not be disrupted by any student arrivals?
A)0.00
B)0.05
C)0.15
D)0.45

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The Answer of Students arrive at a professor's office every 20 minutes during final exam week according to a Poisson distribution. What is the probability that the professor's one hour afternoon nap will not be disrupted by any student arrivals?
A)0.00
B)0.05
C)0.15
D)0.45

Students Arrive at a Professor's Office Every 20 Minutes During