8.56 Identify the key elements. For each of thefollowing scenarios, identify the populations, the counts,and the sample sizes; compute the two proportions andfind their difference.(a) A study of tipping behaviors examined the in sirelationship between the color of the shirt worn by theserver and whether or not the customer left a tip.19 Therewere 418 male customers in the study; 40 of the 69 whowere served by a server wearing a red shirt left a tip. Ofthe 349 who were served by a server wearing a differentcolored shirt, 130 left a tip.(b) A sample of 40 runners will be used to comparetwo new routines for stretching. The runners will berandomly assigned to one of the routines which theywill follow for two weeks. Satisfaction with the routineswill be measured using a questionnaire at the end of thetwo-week period. For the first routine, nine runners saidthat they were satisfied or very satisfied. For the secondroutine, six runners said that they were satisfied or verysatisfied.

Given a) X1=40, N1=69 X2=130, N2=349

3.56 Identify the key elements. For each of the Following scenarios, identify the populations, the and the sample sizes; compute the two proportio Find their difference. a) A study of tipping behaviors examined the relationship between the color of the shirt worn b server and whether or not the customer left a tip. were 418 male customers in the study; 40 of the E were served by a server wearing a red shirt left a the 349 who were served by a server wearing a dif colored shirt, 130 left a tip. (b) A sample of 40 runners will be used to compar two new routines for stretching. The runners will randomly assigned to one of the routines which th will follow for two weeks. Satisfaction with the ro will be measured using a questionnaire at the end two-week period. For the first routine, nine runne that they were satisfied or very satisfied. For the s- id th C: 1

3.56 Identify the key elements. For each of the Following scenarios, identify the populations, the and the sample sizes; compute the two proportio Find their difference. a) A study of tipping behaviors examined the relationship between the color of the shirt worn b server and whether or not the customer left a tip. were 418 male customers in the study; 40 of the E were served by a server wearing a red shirt left a the 349 who were served by a server wearing a dif colored shirt, 130 left a tip. (b) A sample of 40 runners will be used to compar two new routines for stretching. The runners will randomly assigned to one of the routines which th will follow for two weeks. Satisfaction with the ro will be measured using a questionnaire at the end two-week period. For the first routine, nine runne that they were satisfied or very satisfied. For the s- id th C: 1

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN:9780547587776

Author:HOLT MCDOUGAL

Publisher:HOLT MCDOUGAL

Chapter11: Data Analysis And Probability

Section11.4: Collecting Data

Problem 3E

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