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In a certain college, 38% of the physics majors belong to ethnic minorities. If 20 students are selected at random from the physics majors,

In a certain college, 38% of the physics majors belong to ethnic minorities. If 20 students are selected at random from the physics majors, what is the probability that less than 7 belong to an ethnic minority? 0.755 0.312 0.489 0.511

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