Author Question: Interval estimates for the variance of a normal population rely on the random variable (n - 1)s2 / ... (Read 93 times)

Jramos095 · **on:** Jun 24, 2018

Interval estimates for the variance of a normal population rely on the random variable (n - 1)s2 / 2, which follows:

A) a normal distribution.
B) a binomial distribution.
C) the Poisson distribution.
D) a chi-square distribution.

Question 2

Which of the following statements is true given that the events A and B have nonzero probabilities?

A) A and B cannot be both independent and mutually exclusive.
B) A and B can be both independent and mutually exclusive.
C) A and B are always independent.
D) A and B are always mutually exclusive.