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Finding of a survey of Systems magazine subscribers: Thirty [#permalink]
31 Oct 2006, 09:14
100% (02:22) correct
0% (00:00) wrong based on 4 sessions
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Finding of a survey of Systems magazine subscribers: Thirty percent of all merchandise orders placed by subscribers in response to advertisements in the magazine last year were placed by subscribers under age thirty-five.
Finding of a survey of advertisers in Systems magazine: Most of the merchandise orders placed in response to advertisements in Systems last year were placed by people under age thirty-five.
For both of the findings to be accurate, which of the following must be true?
A. More subscribers to Systems who have never ordered merchandise in response to advertisements in the magazine are age thirty-five or over than are under age thirty-five.
B. Among subscribers to Systems, the proportion who are under age thirty-five was considerably lower last year than it is now.
C. Most merchandise orders placed in response to advertisements in Systems last year were placed by Systems subscribers over age thirty-five.
D. Last year, the average dollar amount of merchandise orders placed was less for subscribers under age thirty-five than for those age thirty-five or over.
E. Last year many people who placed orders for merchandise in response to advertisements in Systems were not subscribers to the magazine.
I picked A and this was my reasoning: If there are 10 subscribers, then 3 bought merchandise and are under 35. Since the other survey says that most people who bought merchandise are under 35, the 3 from the previous survey should belong to the majority of merchandise buyers. This implies that out of the 7 that are over 35 less than 3 bought merchandise as this has to be in the minority.
In other words there are more people in the age 35 and over category who did not buy merchandise than there are in the under age 35 category.
I wanted to pick E but it seems out of scope since it talks about buyers who are not subscribers.