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Question 6: (1.5 marks) The true mean of the cost of a certain type of surgeries...

Question 6: (1.5 marks) The true mean of the cost of a certain type of surgeries is ? = 5000 riyals. Also, it is known that the population standard deviation of the costs is ? = 150. Find the probability that a sample of size ? = 60 surgeries yields a sample mean (?̅) more than 4950 Riyals.

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