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## Homework Statement

Find the Z value that corresponds to the given area.

[PLAIN]http://img163.imageshack.us/img163/3785/problem1v.jpg [Broken]

## The Attempt at a Solution

What I did was go to Table E and find the closest number to 0.0166 which was 0.0160, and the Z numbers were 0.04 and 0.0. I then added them up together to get the answer of -0.04 (negative since it's less than 0) but it's wrong.

**The actual answer was: -2.13**. I'm suspecting it's because the area is negative infinite to Z, and that's where I messed up at. Normally if it's between the median (which is 0) and Z, i would just add up both numbers.

Therefore, how do I solve this problem if the area is between infinite to Z?

**2. Homework Statement**

Find the z value to the left of the mean so that 98.87% of the area under the distribution curve lies to the right of it.

I didn't understand the wording of this problem at all, but I did give my attempt at drawing the graph (not sure if it's correct).

[PLAIN]http://img42.imageshack.us/img42/6641/problem2t.jpg [Broken]

**Actual Answer**

The answer of this problem is:

**-2.28**

Please help!!!

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