the standard normal curve is a probability density curve for a continuous random variable. This means that the area underneath the entire curve is 1. what is the area of the shaded region between the two z scores (-1.21 and 0.84).
helppppp meeee please

Question

the standard normal curve is a probability density curve for a continuous random variable. This means that the area underneath the entire curve is 1. what is the area of the shaded region between the two z scores (-1.21 and 0.84). 
helppppp meeee please

zarkon · Answer

0.68640635220242

amistre64 · Answer

what tools do you have at your disposal for this?  ztable, ti83, other?

anonymous · Answer

ztable

anonymous · Answer

my answer matched 0.686 thank you everyone

amistre64 · Answer

then lets find the area from the mean to .84; look on the left side of the ztable for 0.8 and match that with the top of .04

amistre64 · Answer

:)  very well

amistre64 · Answer

just to go over the steps so I dont forget them in my old age :)

add the areas you find on the ztable for:

                    .04
                      .
                      .
0.8 .............. N

and

          .01
            .
            .
            .
            .
1.2..... M

M+N = area between -1.21 and .84, i aint got a ztable handy to check it tho :)