1. The problem statement, all variables and given/known data Decide the density parameter from the following data: z=0.04, m= 17.38 and σ=0.19 2. Relevant equations Definition of the density parameter: Where p0 is the current density and pc is the critical density. 3. The attempt at a solution I feel like I don't have enough information to calculate it as I'm unable to calculate the current density of the universe. Any help is greatly appreciated! Thanks.