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Author Question: In order to construct a confidence interval estimate for the difference between two population ... (Read 139 times)

erika

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on: Jun 24, 2018
In order to construct a confidence interval estimate for the difference between two population means, independent samples are obtained from two normal populations with unknown but assumed to be equal variances.
 
  If the first sample contains 18 items and the second sample contains 14 items, which of the following distributions will be used?A) the t distribution with 32 degrees of freedom
  B) the t distribution with 17 degrees of freedom
  C) the t distribution with 13 degrees of freedom
  D) the t distribution with 30 degrees of freedom

Question 2

Of those in the sample who went partying the weekend before the final exam, what percentage of them did poorly in the exam?
 
  What will be an ideal response?


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Athena23

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

D

Answer to Question 2

53 out of 75, or 70.67


erika

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Reply 2 on: Jun 24, 2018
YES! Correct, THANKS for helping me on my review

softEldritch

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Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

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