Obtain P value from positive and negative Z scores
My fiancée is working on her master's thesis and her professor recommended a website that gives her P values when she plugs in Z scores.
The website works fine (although it crashes for a while on incorrect input) but it provides no transparency as to the formula used to compute the P value.
More problematic, she had to input hundreds of numbers into it which took forever. I tried to find an Excel formula that could replicate the results of the website