Question: How would the primordial helium content of the universe have been affected if the present cosmic background radiation temperature was (27 mathrm{~K}) instead of (2.7

How would the primordial helium content of the universe have been affected if the present cosmic background radiation temperature was $27 \mathrm{~K}$ instead of $2.7 \mathrm{~K}$ ? What about $0.27 \mathrm{~K}$ ?

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Statistical Mechanics 4th Edition by R.K. Pathria, Paul D. Beale