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Author Question: A sociologist develops a test to measure attitudes about public transportation, and 27 randomly ... (Read 81 times)

SAVANNAHHOOPER23

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on: Aug 2, 2018
A sociologist develops a test to measure attitudes about public transportation, and 27 randomly selected subjects are given the test.
 
  Their mean score is 76.2 and their standard deviation is 21.4. Construct the 95 confidence interval for the standard deviation, , of the scores of all subjects.
  A) 17.2 <  < 27.2 B) 17.5 <  < 27.8 C) 16.6 <  < 28.6 D) 16.9 <  < 29.3

Question 2

You want to be 95 confident that the sample variance is within 20 of the true population variance.
 
  A) 182 B) 210 C) 3056 D) 191


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poopface

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Reply #1 on: Aug 2, 2018
Answer to Question 1

This is awesome you took your the time to answer these questions. You have been so helpful.

Answer to Question 2

B


SAVANNAHHOOPER23

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Reply #2 on: Aug 2, 2018
Thank you!


poopface

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Reply #3 on: Aug 2, 2018
Always glad to help...


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