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XC 20 21 22 23 24 F(x) 25 8 8 33 Let & be the ages of students in a class. Given the frequency

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XC 20 21 22 23 24 F(x) 25 8 8 33 Let & be the ages of students in a class. Given the frequency distribution F(x) above, determine the following probabilities: (a) P(x > 23 or x < 21): (b) P(20 < x

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