(Answered) Sample mean-standard deviation of the adjusted marks

Statistics

Problem: The marks of a sample of 25 students from a large class in a recent test have sample mean 57.2 and standard deviation 7.3. The marks are subsequently adjusted: each mark is multiplied by 1.1 and the result is then increased by 8.

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Question: Calculate the sample mean and standard deviation of the adjusted marks. Please show steps how you get an answer and please be clear in your explanation.

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