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Author Question: When testing for the difference between the means of two independent populations, with samples of ... (Read 81 times)

lbcchick

  • Hero Member
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  • Posts: 550
on: Jun 24, 2018
When testing for the difference between the means of two independent populations, with samples of sizes n1 and n2, where the population variances are unknown but assumed to be equal, what is the number of degrees of freedom?
 
  A) n - 1
  B) n1 + n2 - 1
  C) n1 + n2 - 2
  D) n - 2

Question 2

What is the mean of Y?
 
  A) 680
  B) 330
  C) 120
  D) 140


Melissahxx

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  • Posts: 304
Reply #1 on: Jun 24, 2018
Answer to Question 1

C

Answer to Question 2

D


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