If Z is a standard normal random variable, then the value z for which P(-z 
Z 
z) equals 0.8764 is:
Definitions:
Peanut Butter
A food paste or spread made from ground dry roasted peanuts.
Explanandum
The phenomenon or event that is being explained in a scientific inquiry.
Hypotheses
Tentative explanations or suppositions made based on limited evidence as a starting point for further investigation.
Arguments
A series of statements typically used to persuade someone of something or to present reasons for accepting a conclusion.
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