基础统计学ActiveLearningLectureSlidesChapter8HypothesisTestingwithTwoSamples

Slide 1-,*,Copyright 2007 Pearson Education,Inc.Publishing as Pearson Addison-Wesley,Slide 4-,*,Copyright 2007 Pearson Education,Inc.Publishing as Pearson Addison-Wesley,Slide 4-,*,Copyright 2007 Pearson Education,Inc.Publishing as Pearson Addison-Wesley,Slide 4-,*,Copyright 2007 Pearson Education,Inc.Publishing as Pearson Addison-Wesley,Slide 4-,*,Copyright 2007 Pearson Education,Inc.Publishing as Pearson Addison-Wesley,Slide 4-,*,Copyright 2007 Pearson Education,Inc.Publishing as Pearson Addison-Wesley,Slide 8-,*,Copyright 2007 Pearson Education,Inc.Publishing as Pearson Addison-Wesley,Slide 8-,*,Copyright 2007 Pearson Education,Inc.Publishing as Pearson Addison-Wesley,Slide 8-,*,Copyright 2007 Pearson Education,Inc.Publishing as Pearson Addison-Wesley,Slide 8-,*,Copyright 2007 Pearson Education,Inc.Publishing as Pearson Addison-Wesley,Slide 8-,*,Copyright 2007 Pearson Education,Inc.Publishing as Pearson Addison-Wesley,Slide 4-,1,Copyright 2007 Pearson Education,Inc.Publishing as Pearson Addison-Wesley,Active Learning Lecture Slides,For use with Classroom Response Systems,Elementary Statistics:,Picturing,the World,Fourth Edition,by Larson and Farber,Chapter 8:Hypothesis Testing with Two Samples,Slide 8-,2,Copyright 2007 Pearson Education,Inc.Publishing as Pearson Addison-Wesley,Classify the pair of samples as dependent or independent.,Sample 1:Exam scores for 25 students in Dr.Smiths morning statistics class.,Sample 2:Exam scores for 28 students in Dr.Smiths afternoon statistics class.,Dependent,Independent,Slide 8-,3,Copyright 2007 Pearson Education,Inc.Publishing as Pearson Addison-Wesley,Classify the pair of samples as dependent or independent.,Sample 1:Exam scores for 25 students in Dr.Smiths morning statistics class.,Sample 2:Exam scores for 28 students in Dr.Smiths afternoon statistics class.,Dependent,Independent,Slide 8-,4,Copyright 2007 Pearson Education,Inc.Publishing as Pearson Addison-Wesley,State the null and alternative hypotheses.,The mean cell phone bill for females(1)is higher than the mean cell phone for males(2).,H,0,:,1,2,H,a,:,1,2,H,0,:,1,2,H,0,:,1,2,H,a,:,1,2,H,a,:,1,2,H,0,:,1,2,H,0,:,1,2,H,a,:,1,2,Slide 8-,6,Copyright 2007 Pearson Education,Inc.Publishing as Pearson Addison-Wesley,Find the standardized test statistic,z,for the following situation:,Claim,:,1,=,2,;,s,1,=3.7,n,1,=40,s,2,=2.1,n,2,=35,z,=3.25,z,=3.36,z,=2.45,z,=5.89,Slide 8-,7,Copyright 2007 Pearson Education,Inc.Publishing as Pearson Addison-Wesley,Find the standardized test statistic,z,for the following situation:,Claim,:,1,=,2,;,s,1,=3.7,n,1,=40,s,2,=2.1,n,2,=35,z,=3.25,z,=3.36,z,=2.45,z,=5.89,Slide 8-,8,Copyright 2007 Pearson Education,Inc.Publishing as Pearson Addison-Wesley,Find the pooled estimate of the standard deviation for the following situation:,s,1,=1.3,n,1,=12,s,2,=0.8,n,2,=15,Slide 8-,9,Copyright 2007 Pearson Education,Inc.Publishing as Pearson Addison-Wesley,Find the pooled estimate of the standard deviation for the following situation:,s,1,=1.3,n,1,=12,s,2,=0.8,n,2,=15,Slide 8-,10,Copyright 2007 Pearson Education,Inc.Publishing as Pearson Addison-Wesley,Find the standardized test statistic,t,for the following situation(assume the populations are normally distributed and the population variances are equal):,Claim,:,1,=,2,;,s,1,=1.3,n,1,=12,s,2,=0.8,n,2,=15,t,=1.72,t,=1.63,t,=0.63,t,=0.69,Slide 8-,11,Copyright 2007 Pearson Education,Inc.Publishing as Pearson Addison-Wesley,Find the standardized test statistic,t,for the following situation(assume the populations are normally distributed and the population variances are equal):,Claim,:,1,=,2,;,s,1,=1.3,n,1,=12,s,2,=0.8,n,2,=15,t,=1.72,t,=1.63,t,=0.69,t,=0.63,Slide 8-,12,Copyright 2007 Pearson Education,Inc.Publishing as Pearson Addison-Wesley,State the null and alternative hypotheses.,The mean score before and after a treatment are the same.,H,0,:,1,=,2,H,a,:,1,2,H,0,:,1,2,H,a,:,1,=,2,H,0,:,d,=0 H,a,:,d,0,H,0,:,d,2,H,a,:,d,=0,Before,7,5,8,3,6,4,After,5,4,4,2,7,3,Slide 8-,13,Copyright 2007 Pearson Education,Inc.Publishing as Pearson Addison-Wesley,State the null and alternative hypotheses.,The mean score before and after a treatment are the same.,H,0,:,1,=,2,H,a,:,1,2,H,0,:,1,2,H,a,:,1,=,2,H,0,:,d,=0 H,a,:,d,0,H,0,:,d,2,H,a,:,d,=0,Before,7,5,8,3,6,4,After,5,4,4,2,7,3,Slide 8-,14,Copyright 2007 Pearson Education,Inc.Publishing as Pearson Addison-Wesley,Find the mean of the difference between the paired data entries in the dependent samples,4.17,4.83,1.33,5.5,Before,7,5,8,3,6,4,After,5,4,4,2,7,3,Slide 8-,15,Copyright 2007 Pearson Education,Inc.Publishing as Pearson Addison-Wesley,Find the mean of the difference between the paired data entries in the dependent samples,4.17,4.83,1.33,5.5,Before,7,5,8,3,6,4,After,5,4,4,2,7,3,Slide 8-,16,Copyright 2007 Pearson Education,Inc.Publishing as Pearson Addison-Wesley,State the null and alternative hypotheses.,The proportion of female accountants(1)is less than the proportion of male accountants(2).,H,0,:,p,1,p,2,H,0,:,p,