假设25%的运动员已被取消资格，a一个随机选择的运动员将在下一学期被取消资格的概率是多少？
Suppose 25% of the athletes have been disqualified in previous terms. a What is the probability that a randomly selected athlete will be disqualified during the next grading period?
听到这些，教授取了他的样品，并拿回去详加分析，准备在下一个学期公布结果。
With this, the professor took his sample, analyzed it, and was ready to present the results the following semester at school.
听到这些，教授取了他的样品，并拿回去详加分析，准备在下一个学期公布结果。
With this, the professor took his sample, analyzed it, and was ready to present the results the following semester at school.
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