i need a detailed explanation please

2. Suppose a high school teacher administers a 50-question true/false quiz to their students (yikes, that's a long quiz!). Assume each student is independent and is equally able to complete the quiz in any amount of time. The students have 80 minutes to complete the quiz. a) What is the probability that a student takes less than 10 minutes to complete the quiz? b) What is the probability that a student takes more than 25 minutes to complete the quiz? c) What is the probability that a student takes between 30 and 50 minutes to complete the quiz, inclusive