Why is it that the correct answer is E? What is the best explanation for the answer? Thanks (A)It is not a well-designed experiment because employees were allowed to volunteer instead of beingrandomly selected.(B)It is not a well-designed experiment because only one new chair was used. At least two new treatmentsmust be used.(C)It is not a well-designed experiment because each employee was assigned both treatments, and eachemployee should be assigned only one.(D)It is not a well-designed experiment because using a coin flip does not guarantee that fifteen employeeswill use each chair first.(E)It is a well-designed experiment because there is random assignment, replication, and comparison of atleast two treatment groups. A local employer asked for help selecting a new type of desk chair. Thirty employees volunteered, and eachemployee used the new desk chair for two weeks and the current desk chair for two weeks. To determine whichchair was used first, a coin was flipped for each employee. Heads represented using the new chair first, and tailsrepresented using the current chair first. At the end of each two-week period, the employees were asked to rate theirsatisfaction with the new chair. Which of the following best describes this study?

Given that, Thirty employees volunteered and each employee used the new desk chair for two weeks and…

Answered: Why is it that the correct answer is E?…

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Why is it that the correct answer is E? What is the best explanation for the answer? Thanks

Algebra: Structure And Method, Book 1

(REV)00th Edition

ISBN:9780395977224

Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole

Publisher:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole

Chapter2: Working With Real Numbers

Section2.4: Subtracting Real Numbers

Problem 7P

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Question

Why is it that the correct answer is E? What is the best explanation for the answer? Thanks

(A)
It is not a well-designed experiment because employees were allowed to volunteer instead of being
randomly selected.
(B)
It is not a well-designed experiment because only one new chair was used. At least two new treatments
must be used.
(C)
It is not a well-designed experiment because each employee was assigned both treatments, and each
employee should be assigned only one.
(D)
It is not a well-designed experiment because using a coin flip does not guarantee that fifteen employees
will use each chair first.
(E)
It is a well-designed experiment because there is random assignment, replication, and comparison of at
least two treatment groups.

A local employer asked for help selecting a new type of desk chair. Thirty employees volunteered, and each
employee used the new desk chair for two weeks and the current desk chair for two weeks. To determine which
chair was used first, a coin was flipped for each employee. Heads represented using the new chair first, and tails
represented using the current chair first. At the end of each two-week period, the employees were asked to rate their
satisfaction with the new chair. Which of the following best describes this study?

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Why is A incorrect? Will it not lead to voluntary response bias? How about B and C? Why are they incorrect? Thanks.

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