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Author Question: Is there sufficient evidence that people prefer Criminal Minds to The Big Bang Theory? What will ... (Read 93 times)

TVarnum

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on: Jun 24, 2018
Is there sufficient evidence that people prefer Criminal Minds to The Big Bang Theory?
 
  What will be an ideal response?

Question 2

For a sample of 145 observations from a population of 744, the sample mean is 22.6 and the sample standard deviation is 3.8. Create a 90 confidence interval for the population mean.
 
  A) 22.6  0.113
  B) 22.6  1.328
  C) 22.6  0.894
  D) 22.6  0.466


Sarahjh

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

H0 : P = 0.50 (No preference), H1: P < 0.50 (less than 50 prefer The Big Bang Theory).
P(X  4  P = 0.5, n = 12 ) = 0.1208 + 0.0537 + 0.0161 + 0.0029 + 0.0002 = 0.1908
We fail to reject H0 of no evidence of preference for significance levels less than 19.08.

Answer to Question 2

D


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