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Author Question: Interval estimates for the variance of a normal population rely on the random variable (n - 1)s2 / ... (Read 104 times)

Jramos095

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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.


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fraziera112

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Reply #1 on: Jun 24, 2018
Answer to Question 1

D

Answer to Question 2

A


Jramos095

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Reply 2 on: Jun 24, 2018
Gracias!

Viet Thy

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Reply 3 on: Yesterday
Wow, this really help

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