please answer both questions by using the ideas of question

please answer both questions by using the ideas of question number 3 and 4 which I posted before. thank you

a idthe probability that there is n 5.. In the same problem(#4), a). Find the probability that there is no accident for 1 week? (X is greater than 7 days). Find probability that there is no accident for 2 weeks given that there is no accident for week?

Solution

Please provide 3 and 4 questions