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Researchers who are trying a new shampoo formula plan to compare the condition of hair for people who use the new formula with the condition of hair for people who use the existing formula. Twelve volunteers have tried the shamp0o and so will serve as our population. Information on those volunteers (numbered 1 to 12) is presented in the table before. 5. Number 1 3 4 5 7 8 10 11 12 Gender Male Female Male Female Female Male Male Female Male Female Male Female Age 21 20 47 60 62 61 58 44 44 24 23 46 a) Researchers want to conduct an experiment to compare the two formulas. They believe response is affected by age but not gender. Design and carry out a stratified sample of this population. There should be 6 people in the sample.

Researchers who are trying a new shampoo formula plan to compare the condition of hair for people who use the new formula with the condition of hair for people who use the existing formula. Twelve volunteers have tried the shamp0o and so will serve as our population. Information on those volunteers (numbered 1 to 12) is presented in the table before. 5. Number 1 3 4 5 7 8 10 11 12 Gender Male Female Male Female Female Male Male Female Male Female Male Female Age 21 20 47 60 62 61 58 44 44 24 23 46 a) Researchers want to conduct an experiment to compare the two formulas. They believe response is affected by age but not gender. Design and carry out a stratified sample of this population. There should be 6 people in the sample.

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Researchers who are trying a new shampoo formula plan to compare the condition of hair for people who use the new formula with the condition of hair for people who use the existing formula. Twelve volunteers have tried the shamp0o and so will serve as our population. Information on those volunteers (numbered 1 to 12) is presented in the table before. 5. Number 1 3 4 5 7 8 9 10 11 12 Gender Male Female Male Female Female Male Male Female Male Female Male Female Age 21 20 47 60 62 61 58 44 44 24 23 46 a) Researchers want to conduct an experiment to compare the two formulas. They believe response is affected by age but not gender. Design and carry out a stratified sample of this population. There should be 6 people in the sample. b) A new team of researchers wants to carry out a similar experiment but they believe hair response to shampoo is based on gender. Design and carry out a new stratified sample of 6 people from the same initial population. с) A third team would like to use a systematic sampling design to determine the effectiveness of the shampoo. Design and carry out a plan that would result in at least 4 subjects in the sample.
Transcribed Image Text:Researchers who are trying a new shampoo formula plan to compare the condition of hair for people who use the new formula with the condition of hair for people who use the existing formula. Twelve volunteers have tried the shamp0o and so will serve as our population. Information on those volunteers (numbered 1 to 12) is presented in the table before. 5. Number 1 3 4 5 7 8 9 10 11 12 Gender Male Female Male Female Female Male Male Female Male Female Male Female Age 21 20 47 60 62 61 58 44 44 24 23 46 a) Researchers want to conduct an experiment to compare the two formulas. They believe response is affected by age but not gender. Design and carry out a stratified sample of this population. There should be 6 people in the sample. b) A new team of researchers wants to carry out a similar experiment but they believe hair response to shampoo is based on gender. Design and carry out a new stratified sample of 6 people from the same initial population. с) A third team would like to use a systematic sampling design to determine the effectiveness of the shampoo. Design and carry out a plan that would result in at least 4 subjects in the sample.
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