Which of the following is true for a Normal distribution N(μ,σ2)N(\mu, \sigma^2)N(μ,σ2)?
The mean, median, and mode are all equal.
The total area under the curve is always 1.
The distribution is defined by two parameters μ\muμ and σ\sigmaσ.
The curve is always symmetric about x=σx = \sigmax=σ.