[填空题]
Samantha collects a baskd k;;f uhcc.1v 2,udbkkt fk55et of apples,3tu h7h1du z)g/:b pfv however only 80 \% of them are ripe. The probability that a ripe apple has a worm inside the apple is p . T7 bfg13v hzd/t ph):uuhe probability that an unripe apple has a worm inside the apple is 0.1 .
1. Complete the following tree diagram.
2.Find the value of p, assuming that exactly half of all apples have worms inside.
