From: Olie L (neomorphy@hotmail.com)
Date: Wed Jan 25 2006 - 20:06:09 MST
>From: "H C" <lphege@hotmail.com>
>Reply-To: sl4@sl4.org
>To: sl4@sl4.org
>Subject: JQ Test 1.0
>Date: Thu, 26 Jan 2006 01:00:22 +0000
>
>(Judgment Quotient)
>
>Judgement Quotient Test 1.0
>
>-These questions might seem... familiar :)
>--First of all, how well does everyone score, second of all, did I get the
>answers right? :-p
Did you get the questions right?
Some require certain prior knowledge, others "expect" that you don't use
prior knowledge.
>
>
>1. A random sample of 100 professionals was done. Seventy of those
>interviewed were lawyers, and thirty of those interviewed were engineers.
>Dick is a 30 year old man. He is married and has no children. A man of high
>ability and high motivation, he promises to be quite sucesful in his field.
>He is well liked by his colleagues.
>
>a.What is the probability that Dick is a lawyer:
>b.What is the probability that Dick is an engineer:
Hang on; are any of the lawyers also engineers? The question says nothing
about that, but common knowledge says that it's not common for lawyers to
also be engineers. I do know some people who are on the bar, who also have
other professions.
Does it make any difference? (There is a correct answer).
Common knowledge, combined with the other factors, might also skew the
possibilities. Lawyers might be significantly more likely to have kids.
Do we bring in common knowledge, or take the questions in isolation?
>
>2. A certain town is served by two hospitals. In the larger hospital about
>45 babies are born each day, and in the smaller hospital about 15 babies
>are born each day. As you know, 50 percent of all babies born are boys.
That's not actually true -
www.statistics.gov.uk/downloads/theme_population/PT90book_V2.pdf
So, no, I didn't know that.
>However, the exact percentage may be higher or lower on any given day. For
>a period of 1 year, each hospital kept a record of how many days more than
>60% of the babies born were boys.
>
>Which hospital recorded more such days?
>The larger hospital, or the smaller hospital, or the same (within 5 percent
>of each other).
>
>>
>
>5. Suppose there is some student who made A's and B's in 9th and 10th
>grade, and straight A's in eleventh and twelth grade. Assuming that only
>10% of college freshman make straight A's their first
>semester, what would you guess the probability is that this student makes
>straight A's- greater or less than 50%?
Again, common knowledge (correlation)? What proportion of 11th and 12th
grade students get straight A's?
If only 1% of 11s and 12s get straight As, this does significantly impact
the question.
>
>9. Suppose that...
>Also, suppose John is enrolled in an introductory computer science class in
>his freshman year in
>college, and likes to play video games and read science fiction.
>
>What is the probability that John is a computer science major- greater than
>50% or less than 50%?
I would think that this question /requires/ certain knowledge about course
options. If (the college) or (most colleges) only allow students to take
computer science classes if they are enrolled in a computer science major,
this dramatically increases John's chances of being a CompSci major.
Imagine if the question were about Jurisprudence of Court Procedure
class... it would almost guarantee the student was studying law.
>
>ANSWERS:
>
>1:a.70, b.30 ,2:smaller , 3: c, 4: 50/50 bet, 5:less than , 6: Bill, 7:poor
>or moderate , 8:a , 9:less than , 10:B
>
>
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