New York students must attend t hours, where t ∈ [0,H], of lectures and pass two quizzes to be in good standing for their examination. The number of students who attended between t1 and t2 hours of lectures is described by the integral shown in the image below.   As a result of COVID-19, some students attended less than H/2 hours of lectures before the college was closed down and passed the quizzes so they are qualified to take the examination. Find the ratio of students who attended less than H/2 hours of lectures

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