If X∼Normal(0,1)X \sim \text{Normal}(0, 1)X∼Normal(0,1), what is the distribution of Y=X2Y = X^2Y=X2?
Chi-squared(1)\text{Chi-squared}(1)Chi-squared(1)
Exponential(1/2)\text{Exponential}(1/2)Exponential(1/2)
Gamma(1/2,1/2)\text{Gamma}(1/2, 1/2)Gamma(1/2,1/2)
All of the above