Interval estimates for the variance of a normal population rely on the random variable , which follows ____.
A)	a normal distribution
B)	a binomial distribution
C)	the Poisson distribution
D)	a chi-square distribution
Answer:D
Interval estimates for the variance of a normal population rely on the random variable , which follows ____.
A)	a normal distribution B)	a binomial distribution C)	the Poisson distribution D)	a chi-square distribution