Here is part of a calculation in a spreadsheet working with sample data of x. Q5. f 0- 3 10- 5 25- 40- 8 50-60 5 Which expression calculates the mean of x? А. [3(5) + 5(17.5) + 9(32.5) + 8(45) + 5(55)]/5 [3(5) + 5(17.5) + 9(32.5) + 8(45) + 5(55)]/30 В. C. [3(0) + 5(10) + 9(25) + 8(40) + 5(50)1/5

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