Intro Stats, Books a la Carte Edition (5th Edition)
Intro Stats, Books a la Carte Edition (5th Edition)
5th Edition
ISBN: 9780134210285
Author: Richard D. De Veaux, Paul Velleman, David E. Bock
Publisher: PEARSON
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Chapter 18.4, Problem 1JC

Think about each of the situations described below.

  • Would you use a two-sample t or paired t method (or neither)? Why? or Why not?
  • Would a P-value be useful or would a confidence interval be sufficient to answer the question?

1. Random samples of 50 men and 50 women are asked to imagine buying a birthday present for their best friend. We want to estimate the difference in how much they are willing to spend.

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