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Author Question: Without doing the calculations, explain whether a 95 confidence interval for the mean weight of all ... (Read 21 times)

azncindy619

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on: Jun 24, 2018
Without doing the calculations, explain whether a 95 confidence interval for the mean weight of all bricks produced this day would be wider than, narrower than, or the same width as that of a 99 confidence interval.
 
  What will be an ideal response?

Question 2

On an average, how much would we expect a 5-member household with a monthly income of 2,100 to spend on groceries? Assume that only one of the adults is working.
 
  A) 215.30
  B) 481.60
  C) 172.10
  D) 438.40


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aruss1303

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

A 95 confidence interval for the population mean would be narrower than that of a 99 confidence interval since the z score for a 95 confidence interval (1.96 ) is smaller than the z score for the 99 confidence interval (2.576 ).

Answer to Question 2

D


azncindy619

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Reply #2 on: Jun 24, 2018
Correct answers!


aruss1303

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Reply #3 on: Jun 24, 2018
Great! Please up vote :D


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