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A factory worker productivity is normally distributed. worker A produces an average of 84 units per day with a standard deviation of 24. worker B produces at an average rate of 74 units per day with stanard deviation of 25. (a) what is the probability that in any single day worker A will produce more units than worker B? (b) what is the probablity that during one week. (5 weeking days). worker A will produce more units than worker B on average?

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