-4.2, -4 1/2, -4.7, -5 1/4, -5.5
3y-9=6
add 9 to both sides
3y=15
Divdide both sides by 3
y=5 is the answer
Your answer x=−1.387158,0.295703
This region as the same area as the one in your previous question.
Pr[1 < <em>Z</em> < 2] = Pr[-2 < <em>Z</em> < -1] ≈ 0.14
