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Author Question: Using an independent-measurest, the 90 confidence interval for the difference between two population ... (Read 10 times)

magmichele12

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on: Jun 20, 2018
Using an independent-measurest, the 90 confidence interval for the difference between two population means ranges from 19 to 23 . Based on this confidence interval, how big is the difference between the two sample means?
 
  a. 4 points c. 21 points
  b. 19 points d. 23 points

Question 2

Two separate samples are being used to estimate the population mean difference between two treatment conditions. Which of the following would produce the widest confidence interval?
 
  a. n1 = n2 = 10 with a pooled variance of 10
  b. n1 = n2 = 10 with a pooled variance of 100
  c. n1 = n2 = 20 with a pooled variance of 10
  d. n1 = n2 = 20 with a pooled variance of 100


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jlaineee

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

C

Answer to Question 2

B


magmichele12

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Reply 2 on: Jun 20, 2018
Great answer, keep it coming :)

nyrave

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Reply 3 on: Yesterday
Excellent

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