Solve Quick Mathematica Issue with HypothesisTesting

[HJ Farnsworth]

Greetings,

I have a nagging issue that keeps annoying me in Mathematica.

If a Mathematica function outputs a number I want in the form "variable→number", is there a function I could use or something simple I could type to get the number itself, rather than in the Root[variable, number] form?

Here's an example. I type:

Needs["HypothesisTesting`"]
a=NormalPValue[-2]

and Mathematica outputs:

OneSidedPValue → .0227501

I'm looking for a function f where, if I type:

f[a]

Then Mathematica will output:

.0227501

Thanks for any help you can give.

-HJ Farnsworth

 

[jackmell]

You need to de-reference it:

Needs["HypothesisTesting`"]
a = NormalPValue[-2]

myf[t_] := OneSidedPValue /. NormalPValue[t]

 

[HJ Farnsworth]

That worked, thank you.

-HJ Farnsworth