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Collaborative Statistics: Solution Sheets: Hypothesis Testing: Two Means, Paired Data, Two Proportions

Module by: Dr. Barbara Illowsky, Susan Dean

Summary: This module provides a solution sheet for the Hypothesis Testing: Two Means, Paired Data, Two Proportions chapter of the Collaborative Statistics textbook/collection.

Note: You are viewing an old version of this document. The latest version is available here.

Class Time:

Name:

  • a. HoHo size 12{H rSub { size 8{o} } } {}: _______
  • b. HaHa size 12{H rSub { size 8{a} } } {}: _______
  • c. In words, clearly state what your random variable X¯1−X¯2X¯1−X¯2 size 12{ {overline {X}} rSub { size 8{1} } - {overline {X}} rSub { size 8{2} } } {}, P1'−P2'P1'−P2' size 12{P rSub { size 8{1} } ' - P rSub { size 8{2} } '} {}- or X¯dX¯d size 12{ {overline {X}} rSub { size 8{d} } } {} represents.
  • d. State the distribution to use for the test.
  • e. What is the test statistic?
  • f. What is the pp size 12{p} {}-value? In 1 – 2 complete sentences, explain what the p-value means for this problem.
  • g. Use the previous information to sketch a picture of this situation. CLEARLY label and scale the horizontal axis and shade the region(s) corresponding to the pp size 12{p} {}-value.
    Figure 1
    Figure 1 (wave.PNG)
  • h. Indicate the correct decision (“reject” or “do not reject” the null hypothesis), the reason for it, and write an appropriate conclusion, using complete sentences.
    • i. Alpha:
    • ii. Decision:
    • iii. Reason for decision:
    • iv. Conclusion:
  • i. In complete sentences, explain how you determined which distribution to use.

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