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Hi I need help with answering 2 questions below. For the first question the answer I got is 0.7454 but want to double check and
Hi I need help with answering 2 questions below. For the first question the answer I got is 0.7454 but want to double check and need help with question 2. I have attached the table and formulas to be used Thank you in advance The questions are: A statistics professor knows that the time taken to mark a final exam is normally distributed, with a mean of 45 minutes and a standard deviation of 9 minutes. a) What is the probability that the next exam paper will take more than 39 minutes to mark? b) The professor has 22 hours to mark the last 29 exams. What is the probability he will finish in time? Hint: Determine the average time per exam he will have to mark