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Question 3 [9+6=15 marks]Daily sales of petrol from the Nabua service station are normally distributedwith mean 6300L and the standard deviation 400L.(i) If a daily sale is selected at random, find the probability that it is less than6200L.(ii) If petrol sales are sampled for 40 days, and the mean is calculated, find theprobability that the sample mean is less than 6200L.(iii) Define the Central limit theorem.(3+4+2=9 marks)