Question

Find the area under the standard normal curve between z = -1.35 and z = 2.01

Answer 1

You can use a table or a calculator

I used a calculator (wolfram alpha to be exact) and got this

http://www.wolframalpha.com/input/?i=normalcdf&a=*C.normalcdf-_*Formula.dflt-&f2=-1.35+&x=0&y=0&f=NormalProbabilities.l_-1.35+&f3=2.01&f=NormalProbabilities.r_2.01&a=*FVarOpt.1-_***NormalProbabilities.l-.*NormalProbabilities.r--.***NormalProbabilities.z--.**NormalProbabilities.pr---.*--&a=*FVarOpt.2-_**-.***NormalProbabilities.mu--.**NormalProbabilities.sigma---.**NormalProbabilities.l-.*NormalProbabilities.r---

Answer 2

the one you want is the line that starts with -1.35 < z < 2.01

Answer 3

so its that 0.1107?

Answer 4

no

Answer 5

you want the last value listed

Answer 6

that one that has -1.35 < z < 2.01 near it

Answer 7

ok its 0.8893 then.

Answer 8

correct

Answer 9

thanks!

Answer 10

np