# Chapter 10 quizzies AP stat - © 2011 BFW Publishers The...

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© 2011 BFW PublishersThe Practice of Statistics, 4/e- Chapter 10455Chapter 10:Comparing Two Populations or GroupsContentsComparing Pulse RatesThis activity is a great way to get students thinking about the how random chance canaffect the difference between two means.Use this at the beginning of the chapter or thebeginning of Section 10.2.Alternate Activity: Paper Airplanes ExperimentThis activity has students test two different models of paper airplane to see if one modelflies significantly farther than the other.oIf you do this activity at the beginning of the chapter, consider using arandomization test to analyze the results, similar to the ―Does Polyester Decay?‖activity on page 627.oIf you are planning to teach Chapter 13 (ANOVA) after the AP exam, considermodifying the activity to include 3 or more airplane designs.Although studentswill only be able to analyze the difference between two means in Chapter 10, thisactivity can be a nice preview of what’s to come.For now, if you choose toinclude more than two designs, have students do a separate test for each pair ofairplane designs.oTemplates are available at the website below. If you need help folding the planes,the website even includes videos!Exercising to Lose WeightWhen the results of studies are reported in academic journals, the authors often usespecialized notation to describe their results.This problem provides students with somedetails about a weight loss experiment and asks them to discuss aspects of theexperimental design and confirm the results of the study.Quizzes, Tests, and Solutions
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Chapter 8 / Exercise 32
Essentials of Statistics for Business & Economics
Anderson
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456The Practice of Statistics, 4/e- Chapter 10© 2011 BFW PublishersComparing Pulse RatesHere is a nice Activity you can do at the beginning of Section 10.2 to let students experience theidea of distinguishing between chance differences and ―real‖ differences in population means.Itwas proposed by Professor James Lang (Valencia Community College, Orlando) and is usedwith permission.Place index cards, one for each student, in a box with half marked with the letter "A" and theother half with "B."Then have each student randomly choose a card from the box.Next ask thestudents to measure their pulse rate and write it on the back of the index card.Collect the cardsand write the data on the board for each group.Find the mean pulse rate for each group.Thenhave a conversation like the following:―I bet you didn’t know that the letter on the card influences your pulse rate.‖There is silence followed by puzzled looks.Then say, ―Yes.See, the mean for Group A is 83 and the mean for Group B is 79.[Yournumbers may vary.]So the letter affected your pulse.‖More silence.Then a student says, ―That difference is just due to variation in individual pulses . .. justchance.‖Then say, ―How much difference can we reasonably expect due to chance?‖Since you already have each student’s pulse rate on an index card, shuffle the cards and divide

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Chapter 8 / Exercise 32
Essentials of Statistics for Business & Economics
Anderson
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