Question

# Which possible statements about the chi-squared distribution are true?a) The statistic X^2, that is

Modeling data distributions

Which possible statements about the chi-squared distribution are true?
a) The statistic $$X^{2}$$, that is used to estimate the variance $$S^{2}$$ of a random sample, has a Chi-squared distribution.
b) The sum of the squares of k independent standard normal random variables has a Chi-squared distribution with k degrees of freedom.
c) The Chi-squared distribution is used in hypothesis testing and estimation.
d) The Chi-squared distribution is a particular case of the Gamma distribution.
e)All of the above.