To find the probability, you need to look up the values of P(z<1.15) and P(z<-0.85) firstly
At the
normal distribution table, you will find these:
P(z<1.15)=0.8749
and
P(z<-0.85)=0.1977
Then:
the probability of selecting a z score between –0.85 and 1.15
=
P(Z < 1.15) - P(Z < -0.85)
= 0.8749-0.1977=0.6772
I hope that
helps!
