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Mr. White records an average tolerance of5from a100randomly picked 420 resistors on Monday. The next day, he randomly picked 100 pcs of 570 resistors

Mr. White records an average tolerance of±5Ωfrom a100randomly picked 420 Ω resistors on Monday. The next day, he randomly picked 100 pcs of 570Ω resistors and recorded a tolerance of ±10Ω. The variances of the tolerance are 2Ω and 4Ωrespectively. What is the probability that the difference in the two tolerance is at least 2Ω?


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