need help with a questions!! Thanks

[paris567]

Shade the region on the normal curve shown. Determine the area under the curve
for a standard normal distribution for each of the following z-scores intervals. Then
convert each of the areas to a percentage to the nearest hundredth.

A). Z<-2.15
B) Z>0.92
C) -1.75<Z<1.02


Please help, Thanks

 

[tkhunny]

D) Z > 0 -- Shade the entire right region of the area under the curve. Stop in the middle. Shade nothing to the left.
E) Z < 0 -- Shade the entire left region of the area under the curve. Stop in the middle. Shade nothing to the right.
F) Z > 4 -- Shade the tiniest little chunk in the distant right tail.
G) Z < 4 -- Shade the tiniest little chunk in the distant left tail.

Go! Let's see YOUR attempt at A, B, and C.

 

[Deleted member 4993]

Shade the region on the normal curve shown. Determine the area under the curve
for a standard normal distribution for each of the following z-scores intervals. Then
convert each of the areas to a percentage to the nearest hundredth.

A). Z<-2.15
B) Z>0.92
C) -1.75<Z<1.02


Please help, Thanks

I do NOT see any curve. Did you forget to attach it to your post?

 

[paris567]

 

[Deleted member 4993]

Shade the region on the normal curve shown. Determine the area under the curve
for a standard normal distribution for each of the following z-scores intervals. Then
convert each of the areas to a percentage to the nearest hundredth.

A). Z<-2.15
B) Z>0.92
C) -1.75<Z<1.02
View attachment 24190

Please help, Thanks

Please show us what you have tried and exactly where you are stuck.

Please follow the rules of posting in this forum, as enunciated at:

READ BEFORE POSTING​

Please share your work/thoughts about this problem.

 

[paris567]

I calculated : 2nd RAD ( -1E99,-2.15, 0.2) and after I'm not sure how to properly place it.

 

[Harry_the_cat]

So we can understand what you have done, please explain what 2nd RAD means. This syntax is not familiar.

 

[Dr.Peterson]

I calculated : 2nd RAD ( -1E99,-2.15, 0.2) and after I'm not sure how to properly place it.

I presume that represents a normal distribution function on some calculator, that should give the probability (area) asked for (though I don't know what the 0.2 would be for, and can't imagine this being the 2nd function for a RAD button). What calculator is it? What number did you get?

As for the drawing, you aren't expected to be precise; this sort of sketch is used just to see the relative relationships of the numbers (whether z is positive or negative, which direction is included, and so on). Don't worry about details, just draw something and show us what you did so we can check it.

 

[Steven G]

The horizontal axis among other things is the z axis. The center of this line is where z=0. To the right of the center z>0 and to the left of the center is z<0. For your exercise z can go from -3 to 3.

Now try to do the assignment with what I wrote above and with tkhunny's excellent post.

 

[JeffM]

As far as I can tell, this poster has no understanding , and no interest in developing an understanding, of statistics. He plugs numbers into a calculator with statistical functions and hopes for the best.