An analyst is comparing data collected from randomly assigned test sub- jects who used two different types of hand cream (designated I and II), each for a period of six months. The subjects used one type of cream on one hand and the second on the other and reported a "softness" factor on a scale of 1 to 10 for each hand. What steps should the analyst take to determine which cream is more effective? (A) Calculate the mean difference between the right-hand results and the left-hand results, then carry out a one-sample z-test. (B) Calculate the difference in means between the right-hand results and the left-hand results, then carry out a two-sample z-test. (C) Calculate the mean difference between the right-hand results and the left-hand results, then carry out a one-sample t-test. (D) Calculate the difference in means between the right-hand results and the left-hand results, then carry out a two-sample t-test. (E) Calculate the individual differences between the Type I and Type II results for each subject, then carry out a one-sample t-test for the mean difference.
An analyst is comparing data collected from randomly assigned test sub- jects who used two different types of hand cream (designated I and II), each for a period of six months. The subjects used one type of cream on one hand and the second on the other and reported a "softness" factor on a scale of 1 to 10 for each hand. What steps should the analyst take to determine which cream is more effective? (A) Calculate the mean difference between the right-hand results and the left-hand results, then carry out a one-sample z-test. (B) Calculate the difference in means between the right-hand results and the left-hand results, then carry out a two-sample z-test. (C) Calculate the mean difference between the right-hand results and the left-hand results, then carry out a one-sample t-test. (D) Calculate the difference in means between the right-hand results and the left-hand results, then carry out a two-sample t-test. (E) Calculate the individual differences between the Type I and Type II results for each subject, then carry out a one-sample t-test for the mean difference.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Question
![8. An analyst is comparing data collected from randomly assigned test sub-
jects who used two different types of hand cream (designated I and II),
each for a period of six months. The subjects used one type of cream on
one hand and the second on the other and reported a "softness" factor
on a scale of 1 to 10 for each hand. What steps should the analyst take to
determine which cream is more effective?
(A) Calculate the mean difference between the right-hand results and
the left-hand results, then carry out a one-sample z-test.
(B) Calculate the difference in means between the right-hand results
and the left-hand results, then carry out a two-sample z-test.
(C) Calculate the mean difference between the right-hand results and
the left-hand results, then carry out a one-sample t-test.
(D) Calculate the difference in means between the right-hand results
and the left-hand results, then carry out a two-sample t-test.
(E) Calculate the individual differences between the Type I and Type II
results for each subject, then carry out a one-sample t-test for the
mean difference.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F19823816-49f0-4b51-84d8-cde506458b1a%2Fdc02e03d-d198-4fd5-8f62-141dc0d979ad%2Fri4gxfo_processed.jpeg&w=3840&q=75)
Transcribed Image Text:8. An analyst is comparing data collected from randomly assigned test sub-
jects who used two different types of hand cream (designated I and II),
each for a period of six months. The subjects used one type of cream on
one hand and the second on the other and reported a "softness" factor
on a scale of 1 to 10 for each hand. What steps should the analyst take to
determine which cream is more effective?
(A) Calculate the mean difference between the right-hand results and
the left-hand results, then carry out a one-sample z-test.
(B) Calculate the difference in means between the right-hand results
and the left-hand results, then carry out a two-sample z-test.
(C) Calculate the mean difference between the right-hand results and
the left-hand results, then carry out a one-sample t-test.
(D) Calculate the difference in means between the right-hand results
and the left-hand results, then carry out a two-sample t-test.
(E) Calculate the individual differences between the Type I and Type II
results for each subject, then carry out a one-sample t-test for the
mean difference.
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