all done

This post was edited by YaJiv on Feb 9 2014 01:35pm

1. 71.74%
2. 7.77%
3. 63.06%

let me know if you need shown work

E: all Z-score values taken from this chart
http://www.regentsprep.org/Regents/math/algtrig/ATS7/ZChart.htm

This post was edited by TritonV8 on Feb 9 2014 01:24pm

1st problem says its wrong

2nd problem answer is 8.21 (7.77 worked but I think it rounded up)

I didnt submit the 3rd one cause It can only be submitted once and I wanted to make sure the first one was right

try 73.23 for #1

this worked

rounded up a little

100fg for problem #3

this one has to be correct on first try

60.03 for #3

Depending on how your instructor wants you to round the Z-score values, it'll vary by a percent or 2.
I rounded all Z-values to the hundredth, so that may account for the small margin of difference.
I looked it over again and it should be right in the ballpark of 70%-73%, depending on rounding

you 100% sure?

i think so yeah