If P(0<z<a)=0.3907, find a.
Can anyone help me solve this? I have one of those charts.
Im looking in my book over and over, but it simply does not explain how to solve a problem like this anywhere.
I have no idea what the first step is, and I would like a simple explanation on how to find the answer, which is 1.23(z score)
Yes, I get it now. 0 is in the middle, and is 50%.
But if I can follow up on this type of question, what if you only have variables? How would you be able to solve a problem like this?
For example: P(-b<z<b)=.8664 (find b)
theres gotta be a general rule of thumb here. Hopefully im not asking too many questions but Id like to understand whats happening here, and im not sure what to call these kinds of problems so I had to use the problem in the subject