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Question 1. An online test is scored out 150. Assuming the scores are normally distributed with a mean of 100 and a standard deviation of

Question 1. An online test is scored out 150. Assuming the scores are normally distributed with a mean of 100 and a standard deviation of 15, you pick out 20 test papers. What is the probability that the average marks in the sample of 20 would be no more than 110? {10 marks)

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