单选题 A random variable follows a continuous uniform distribution over 27 to 89. What is the probability of an outcome between 34 and 38?
  • A. 0.0546.
  • B. 0.0645.
  • C. 0.0719.
【正确答案】 B
【答案解析】P(34≤X≤38)=(38-34)/(89-27)=0.0645.