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Author Question: The random variable x represents the number of girls in a family of three children. Assuming that ... (Read 79 times)

penguins

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on: Jul 25, 2018
The random variable x represents the number of girls in a family of three children. Assuming that boys and girls are equally likely, find the mean and standard deviation for the random variable x.
 
  A) mean: 1.50; standard deviation: 0.87 B) mean: 2.25; standard deviation: 0.76
  C) mean: 1.50; standard deviation: 0.76 D) mean: 2.25; standard deviation: 0.87

Question 2

A/An __________ is a subset of data selected from a population.
 
  A) variable B) experimental unit C) statistic D) sample


srodz

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Reply #1 on: Jul 25, 2018
Answer to Question 1

A

Answer to Question 2

D


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