Hello,
Quote:
Originally Posted by ndcruz  I calculated my z value to be z=(23-18)/3 = 5/3 = 1.66
I am trying to find P(Z>1.6666) = ?
can someone please explain how to get this probability using the Z table?
thanks in advance
i got 0.0485
0.5 - 0.4515 |
Well, if this is what you got by using the Z table, then you know how to use it, because your answer is correct...
The z table represents the area bounded by the Gaussian curve, the x axis, the y axis and the line x=a, where a is the z value of the table.
So in fact, tables give you this probability :
Let a>0 and b<0. Let
and
be the z scores of a and b.
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