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Author Question: Let the random variable X denote the number of children who do not recognize their mother's voice. ... (Read 87 times)

dakota nelson

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on: Jun 24, 2018
Let the random variable X denote the number of children who do not recognize their mother's voice. Find the variance of X.
 
  What will be an ideal response?

Question 2

A random sample of n observations, each of which could be classified into exactly one of k categories, is selected. Suppose that a null hypothesis specifies category probabilities that depend on the estimation of m unknown population parameters.
 
  How many degrees of freedom does a goodness-of-fit-test have when population parameters are estimated?A) k - 1
  B) m - 1
  C) k - m - 1
  D) k + m - 1


mk6555

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

2 = nP(1 - P) = 1.8

Answer to Question 2

C


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dakota nelson

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Reply #2 on: Jun 24, 2018
Correct answers!


mk6555

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Reply #3 on: Jun 24, 2018
Great! Please up vote :D


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