Multi-Source Reasoning 多源推理

　　题型描述：页面左方有两或三个选项卡，其中有不同种类或相同种类的各种信息。页面右方是关于这些信息的一个或多个问题。此题型考查考生从不同数据来源中获取最相关信息数据的能力、结合不同种类的数据解决问题的能力。

　　官方样题：

　　1、Email from administrator to research staff

　　January 15, 10:46 a.m.

　　Yesterday was the deadline for our receipt of completed surveys from doctors who were invited to participate in the Medical Practice Priorities Survey. Did we get enough returns from this original group of invitees to get reliable statistics? Do we need to invite additional participants?

　　2、　Email from project coordinator in response to the administrator’s January 15, 10:46 a.m. message

　　January 15, 11:12 a.m.

　　Altogether we got exactly 350 actual survey completions. We need at least 700 and were hoping for even more, so we plan to invite a second group to participate. Both the results from this first group and other research indicates that with this type of survey and this type of participants there is about a 40 percent probability that any given invitee will submit the completed survey in the time we’ll allow. (Obviously that doesn’t mean that if we invited 1,000 we’d necessarily get at least 400, so we need to think in terms of the risks of getting too few returns or exceeding the budget.) All of the participants who submitted their surveys by the deadline will get the $50 payment we promised. What is our total budget for compensation to participants?

　　3、Email from administrator to project coordinator in response to the project coordinator’s January 15, 11:12 a.m. message

　　January 15, 1:54 p.m.

　　The budget we allocated for compensation to those who complete and submit the Medical Practice Priorities Survey is $45,000. We will honor our commitment to pay $50 to each participant—in the second group as well as the first—who completes the survey and submits it by the deadline we specify when we invite them to participate. However, we will need to try not to exceed the total amount that is budgeted for this purpose.

　　Consider each of the following statements. Does the information in the three emails support the inference as stated?

　　The administrator is unwilling to invite as many participants in the second group as were invited in the first group.　　Yes　No

　　The project coordinator does not expect to be able to meet the goal for numbers of completed surveys received.

　　Yes　No

　　The administrator is willing to accept some risk of exceeding the budget for compensating participants.

　　Yes　No

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