For 4 4 to 5 16 to 20 24 to 30
Z-score for 30 = (30 - 25) / 5.8 = 0.8621
z-score for 20 = (20 - 25) / 5.8 = -0.8621
:
Note find probabilities from z-tables
:
Probability ( 20 < X < 30 ) = 0.8051 - 0.1949 = 0.6102
I was stuck on the same thing in my class test. I ended up failing but if I get the answers to it I’ll totally send them to you
Answer:
Option C, Y and Z appear to be parallel lines
Hope this helps!
