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Author Question: What is the pooled estimate of the population variance? A) (14/36)(6.5) + (22/36)(4.5) = 5.28 ... (Read 67 times)

Cooldude101

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on: Jun 20, 2018
What is the pooled estimate of the population variance?
 
  A) (14/36)(6.5) + (22/36)(4.5) = 5.28
  B) (15/38)(6.5) + (23/38)(4.5) = 5.29
  C) (15/23)(6.5) + (23/15)(4.5) = 11.14
  D) (14/22)(6.5) + (22/14)(4.5) = 11.21

Question 2

If the standard deviation of the distribution of the difference between means is 0.76, what is the t score?
 
  A) (15  23) /0.76 = 10.53
  B) (0.76)(15  23) = 6.08
  C) (6.5 + 4.5)/20.76 = 4.18
  D) (55  51) /0.76 = 5.26


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jennafosdick

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Reply #1 on: Jun 20, 2018
Answer to Question 1

a

Answer to Question 2

D


Cooldude101

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Reply 2 on: Jun 20, 2018
Excellent

diana chang

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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