[填空题]
The probability that Amanda successfully passwac s;q36l5l5/,jx hjt vko .ib+9 fbtes her maths exam depends on the ;b.ri4 icivh;y r,o2qexam 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 Amiv2 rhi; 4qy.b,roci;anda 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.