a. Is the sampling dependent or independent in this study? Justify your answer.b. Test the hypothesis at α = 0.05. Using the critical value approach, include all key steps of test ofhypothesis. Are women more flexible than men? To answer this question, a physical therapist measured the flexibility of 15randomly selected women and 20 randomly selected men by determining the number of inches subjects couldreach while sitting on the floor with their legs straight out and back perpendicular to the ground. The moreflexible an individual is, the more they can reach from the seated position. The physical therapist obtained thefollowing data:GenderWomenMenSample Size1520Mean (in inches)20.8618.43SD (in inches)2.113.16Assume that both population distributions are approximately normal and that the population variances are NOTequal.

a. The sampling in this study is independent. The physical therapist measured the flexibility of 15…

women more flexible than men? To answer this question, a physical therapist measured the flexibility of 15 domly selected women and 20 randomly selected men by determining the number of inches subjects could ch while sitting on the floor with their legs straight out and back perpendicular to the ground. The more cible an individual is, the more they can reach from the seated position. The physical therapist obtained the owing data: ender Women Ien Sample Size 15 20 Mean (in inches) 20.86 18.43 SD (in inches) 2.11 3.16 sume that both population distributions are approximately normal and that the population variances are NOT nal.

women more flexible than men? To answer this question, a physical therapist measured the flexibility of 15 domly selected women and 20 randomly selected men by determining the number of inches subjects could ch while sitting on the floor with their legs straight out and back perpendicular to the ground. The more cible an individual is, the more they can reach from the seated position. The physical therapist obtained the owing data: ender Women Ien Sample Size 15 20 Mean (in inches) 20.86 18.43 SD (in inches) 2.11 3.16 sume that both population distributions are approximately normal and that the population variances are NOT nal.

Linear Algebra: A Modern Introduction

4th Edition

ISBN:9781285463247

Author:David Poole

Publisher:David Poole

Chapter7: Distance And Approximation

Section7.3: Least Squares Approximation

Problem 31EQ

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