求教XDF小兰一题

angelsgx

p128 335
The presidents of a consulting firm analyzed the decisions made about marketing by her clients and concluded that the decisions were correct only about half of the time. The conclusion above depends on the presupposition that__
D marketing decisions are just as likely to be correct as they are to be incorrect
E it is possible to classify a marketing decision properly as being either right or wrong

结论是decisions were correct only about half of the time 我想请问下这句话怎么理解。因为我理解为"决定不是时时正确"但是显然不符合答案。求解答。

（答案为E）


非常感谢~

sunniers

decisions were correct only about half of the time
这些decision只有一半的时候是对的。

那么前提是decision是可以分出对错的。