Precambrian rocks<span> are mostly covered by rock systems of more recent origin, but where visible they commonly display evidence of having been altered by intense </span>metamorphism<span>. Precambrian rocks often occur in shields, which are large areas of relatively low elevation that form parts of continental masses.</span>
They contain fluorine atoms, carbon atoms and chlorine atoms.
Answer:
Saturn is the distinct and large gaseous planet in the solar system that is comprised of a ring on its exterior. It is a planet which has the lowest density. Saturn has an atmosphere of very high thickness and the dominant gas present here is hydrogen and helium. The pressure and the depth in Saturn are directly proportional to one another.
As one goes deep inside the Saturn, the body will eventually shrink and get squashed due to the extreme pressure and also will get freeze due to the extremely low temperature.
A meteoriod is a small body moving in the solar system. A meteoriod becoming visible as a meteor and hitting the Earth's surface as a meteorite.
Solution :
a). Let x denotes ACT scores.
ACT scores = 
Mean, 
Sample variance, 
= 11
b). To test whether or not variance of ACT scores of population (say 
) of the UTC students is significantly more than 8.
Consider the hypothesis :
vs 
It is a right tailed test and α = 0.05
We have
So test statics is
= 8.25
Since our 
and it falls in a acceptation region, hence we fail to reject 
and conclude that variance is not greater than 8 significantly.
