Statement of a problem № m1171


The rise time of a reactor is measured in minutes (and fractions of minutes). Let the sample space be positive, real numbers. Define the events A and B as follows: A = {x | x < 72.5} And B = {x | x > 52.5} Describe each of the following events: (a) A’ (b) B’ (c) A ∩ B (d) A U B


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