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Author Question: In a random sample of 60 dog owners enrolled in obedience training, it was determined that the mean ... (Read 16 times)

segrsyd

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In a random sample of 60 dog owners enrolled in obedience training, it was determined that the mean amount of money spent per owner was 109.33 per class.
 
  Assuming the population standard deviation of the amount spent per owner is 12, construct and interpret a 95 confidence interval for the mean amount spent per owner for an obedience class. A) (106.29, 112.37); we are 95 confident that the mean amount spent per dog owner for a single
  obedience class is between 106.29 and 112.37.
  B) (106.78, 111.88); we are 95 confident that the mean amount spent per dog owner for a single
  obedience class is between 106.78 and 111.88.
  C) (106.23, 112.43); we are 95 confident that the mean amount spent per dog owner for a single
  obedience class is between 106.23 and 112.43.
  D) (106.74, 111.92); we are 95 confident that the mean amount spent per dog owner for a single
  obedience class is between 106.74 and 111.92.

Question 2

When constructing a confidence interval about the mean response of y in a linear regression, the t-distribution is used with degrees of freedom.
 
  A) n - 2 B) n - 1 C) n + k - 2 D) n1 + n2 - 2



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jsm54321

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Answer to Question 1

A

Answer to Question 2

A




segrsyd

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Reply 2 on: Jul 24, 2018
Thanks for the timely response, appreciate it


elyse44

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Reply 3 on: Yesterday
Wow, this really help

 

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