I need help, with formulas and step by step is possible please.
8.2 - Find the area of the normal curve that lies between the following Z scores.
A} Z= -1.94 to Z=1.94
( The first step was I drew the bell curve with this area shaded in. Then it says, I need to go to the back of the book and look up the probability of it? I go down to 1.9, and then what do I go to 0.00. 0.01 etc? And, do I do anything with thosenumbers.?
B) Z=-1.12 to Z=2.42
C) Z= -.89 to Z= 3.56
D) Z= -2.00to Z= 2.00
E) Z= -.40 to Z= .49
F) Z= -1.96 to Z= 1.96
However, I am still a little confused. How do I know which number to look up in the back of the book? Also, I tried a few practice problems and looked up the answers, and Im still gettint them wrong....
I got... -1.94 and 1.94,
I looked up in back of book got, 0.4738, subtracted that from 1. got 0.5262. subtracted the higher from the lower, got... 0.0524, is this correct?
for Z= -1.94 to Z= 1.94 finding the A
2006-11-08 03:37:24 · 2 answers · asked by Heather N 2 in Science & Mathematics ➔ Mathematics