[填空题]
The probability that Amandavpgx/p;b d/n/ successfully passes her maths exam +b ut40hih6gqh6r h+hdepends on the exhhi6hq rt4 gh+b+h60u am topic. The probability that the topic is statistics is 0.35 and the probability she passes this topic is only 0.3. The probability that Amanda passes any other topic during the exam is 0.8.
1.Complete the following tree diagram.
2.Find the probability that Amanda does not pass the exam.
