Question

Find the probability of selecting a z score between –0.85 and 1.15.

Answer 1

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!