Find the area under the normal distribution curve between z = –1.34 and z = 2.95

Question

anonymous · Answer

don't know what 'z' is, sorry.  more info maybe?

anonymous · Answer

there is a normal distribution curve 'formula'.  do you know what that is?

anonymous · Answer

z=value-mean/standard deviation

anonymous · Answer

http://en.wikipedia.org/wiki/Normal_distribution You would need to find out to to integrate that with respect to z.

pradipgr817 · Answer

Or for a normal distribution you have a standard table you can get the value from that

anonymous · Answer

You have to find area = P(-1.34<Z<2.95)
=P(Z < 2.95) - P(Z<-1.34)  
Find the z values using a standard distribution table to get the answer:
P(z<2.95)=0.99841113
P(z>-1.34) = 0.090122672