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Solved: In each part of Exercises 61 and 62, state which inference procedure from

ISBN: 9781464108730 488

Solution for problem 61 Chapter 10.2

The Practice of Statistics | 5th Edition

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The Practice of Statistics | 5th Edition

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Problem 61

In each part of Exercises 61 and 62, state which inference procedure from Chapter 8, 9, or 10 you would use. Be specific. For example, you might say, Two-sample z test for the difference between two proportions. You do not need to carry out any proceduresWhich inference method?(a) Drowning in bathtubs is a major cause of death inchildren less than 5 years old. A random sample ofparents was asked many questions related to bathtubsafety. Overall, 85% of the sample said they usedbaby bathtubs for infants. Estimate the percent of allparents of young children who use baby bathtubs.(b) How seriously do people view speeding in comparisonwith other annoying behaviors? A large randomsample of adults was asked to rate a number of behaviorson a scale of 1 (no problem at all) to 5 (verysevere problem). Do speeding drivers get a higheraverage rating than noisy neighbors?(c) You have data from interviews with a random sampleof students who failed to graduate from a particularcollege in 7 years and also from a random sampleof students who entered at the same time and didgraduate. You will use these data to compare thepercents of students from rural backgrounds amongdropouts and graduates.(d) Do experienced computer game players earn higherscores when they play with someone present to cheerthem on or when they play alone? Fifty teenagerswith experience playing a particular computer gamehave volunteered for a study. We randomly assign 25of them to play the game alone and the other 25 toplay the game with a supporter present. Each playersscore is recorded.

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Lecture1 Tuesday,August162:18PM • WaysofKnowingNewinformation ○ Tenacity § Hearingsomethingrepeatedly ○ Authority § Youknowyourinfoistrueifitcomesfromasourceofauthority ○ Experience § Ifyouexperiencesomethingyougainknowledgefromit ○ ReasonandLogic § Youcanthink,reason,andfigureoutinformationthisway...

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