RandomVariate[NormalDistribution[20,10]]​​RandomVariate[NormalDistribution[μ,σ]]/.{μ->20,σ->10}​​ReleaseHold[Hold[RandomVariate[NormalDistribution[μ,σ]]]/.{μ->20,σ->10}]
Out[]=
5.2037
RandomVariate
:Parameter σ at position 2 in NormalDistribution[μ,σ] is expected to be positive.
Out[]=
6.78478
Out[]=
46.4181