You receive parts from one of two suppliers The diameters of the parts from supplier 1 are normally distributed with mean 133 and standard deviation 001 The diameters of the parts from supplier 2 are normally distributed with mean 137 and standard deviation 002 You want to generate the random diameter of the part you just received, knowing only that it came from supplier 1 with probability 06 and from supplier 2 with probability 04 Which of the following Excel formulas is appropriate

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