Precisely.
"Lush" <jm55 at nospambigpond.net.au> wrote in message
news:GJP_8.477517$o66.1285840 at news-server.bigpond.net.au...
>>> --
> Lush
>> Lush-O-Mint: Double Yer Pleasure, Double Yer Fun
>>> Parse Tree <parsetree at hotmail.com> wrote in message
> news:RYFZ8.8274$QY4.1373806 at news20.bellglobal.com...> > "John Knight" <johnknight at usa.com> wrote in message
> > news:HGFZ8.7230$Fq6.531196 at news2.west.cox.net...> > >
> > > "Jet" <thatjetnospam at yahoo.com> wrote in message
> > > news:3D364DCC.FD04A773 at yahoo.com...> > > > > If they didn't have the wrong information, or didn't make an
error,
> > > > > >then of the 30% who got it correct, 23% would have gotten it
correct
> > > because
> > > > > >they guessed, and only 7% would have gotten it correct because
they
> > > > > >understood the problem [ x = total guesses, 0.25x = correct
guesses
> > > 0.75x =
> > > > > >wrong guesses = 70%, x = .93, 0.25x = .23 = correct guesses,
correct
> > > total
> > > > > >answers of 30% - 23% correct guesses = 7% (those who knew the
> > > problem)].
> > > > >
> > > > > You cannot determine the percentage who guessed. You persist in
> > > assuming
> > > > > that everyone who got the answer wrong guessed randomly, and there
is
> > no
> > > > > evidence of this.
> > > > >
> > > >
> > > > Let's look at his algebra. He states x = total guesses, and 0.25x =
> > > > correct guesses 0.75 x= wrong guesses.
> > > >
> > > > He then figures that 0.75 x= 70%, and thus x = .93.
> > > >
> > > > BUT, if we figure .25 x= 30%, x=1.20. We have x with two different
> > > > values!
> > > >
> > > > LOL.
> > > >
> > > > J
> > >
> > >
> > > My, my, Jet, you're really working overtime to try to prove the point
of
> > > this thread, aren't you? Two stabs at it so far, and you're still off
by
> > a
> > > mile.
> > >
> > > Don't ask anybody for the answer, ok? This is a closed book quiz.
> > Scout's
> > > honor?
> > >
> > > John Knight
> > >
> > >
> > >
> > > ps--this "math problem" actually is about as simple as many of the
TIMSS
> > > questions where less than zero percent of American girls got the
correct
> > > answer, once adjusted for guesses. But then, Jet also claims that she
> > never
> > > guesses on multiple choice questions.
> > > http://christianparty.net/timssphysics.htm> >
> > Item G11:
> > The water level in a small aquarium reaches up to a mark A. After a
large
> > ice cube is dropped into the water, the cube floats and the water level
> > rises to a new mark B. What will happen to the water level as the ice
melts?
> > Explain your reasoning.
> >
> > I am actually curious as to what the answer to this question is. Will
the
> > volume of ice, which is greater than that of water offset the parts of
the
> > ice that are above water?
> >
> >
>> If my memory serves me correctly, when I add icecubes to a summer drink
the level of the liquid in
> the glass rises.
>>
