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Author Question: Consider the following linear transformation of a random variable y = where x is the mean of x and x ... (Read 195 times)

jessicacav

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on: Jun 29, 2018
Consider the following linear transformation of a random variable y = where x is the mean of x and x is the standard deviation. Then the expected value and the standard deviation of Y are given as
 
  A) 0 and 1
  B) 1 and 1
  C) Cannot be computed because Y is not a linear function of X
  D) and x

Question 2

The sample average is a random variable and
 
  A) is a single number and as a result cannot have a distribution.
  B) has a probability distribution called its sampling distribution.
  C) has a probability distribution called the standard normal distribution.
  D) has a probability distribution that is the same as for the Y1,..., Yn i.i.d. variables.


juliaf

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Reply #1 on: Jun 29, 2018
Answer to Question 1

Answer: A

Answer to Question 2

Answer: B


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