(a)
To obtain the margin of error using table G and find the Tukey simultaneous
(a)
Answer to Problem 26.1AYK
The margin of error using table G is
Explanation of Solution
In the question, it is given that a study describes a double-blind randomized experiment that assigned healthy undergraduate students to drink one of four beverages after fasting overnight: water, water and caffeine, water and glucose, water with caffeine and glucose. Also, it is given that because all four groups are the same size, the margin of error is the same for all six pairwise comparisons. Thus, the margin of error will be calculated as:
Thus, the margin of error using table Gis
For water and water with caffeine:
For water and water with glucose:
For water and water with caffeine and glucose:
For water with caffeine and water with glucose:
For water with caffeine and water with caffeine and glucose:
For water with glucose and water with caffeine and glucose:
Hence the confidence intervals.
(b)
To explain in simple language what “
(b)
Explanation of Solution
In the question, it is given that a study describes a double-blind randomized experiment that assigned healthy undergraduate students to drink one of four beverages after fasting overnight: water, water and caffeine, water and glucose, water with caffeine and glucose. Also, it is given that because all four groups are the same size, the margin of error is the same for all six pairwise comparisons. Thus, in simple language what “
(c)
To find out which pairs of means differ significantly at the overall
(c)
Answer to Problem 26.1AYK
None of the pairs of means differ significantly at the overall
Explanation of Solution
In the question, it is given that a study describes a double-blind randomized experiment that assigned healthy undergraduate students to drink one of four beverages after fasting overnight: water, water and caffeine, water and glucose, water with caffeine and glucose. Also, it is given that because all four groups are the same size, the margin of error is the same for all six pairwise comparisons. Thus, as at the
And for all the pairs we fail to reject the null hypothesis.
Want to see more full solutions like this?
Chapter 26 Solutions
Practice of Statistics in the Life Sciences
- MATLAB: An Introduction with ApplicationsStatisticsISBN:9781119256830Author:Amos GilatPublisher:John Wiley & Sons IncProbability and Statistics for Engineering and th...StatisticsISBN:9781305251809Author:Jay L. DevorePublisher:Cengage LearningStatistics for The Behavioral Sciences (MindTap C...StatisticsISBN:9781305504912Author:Frederick J Gravetter, Larry B. WallnauPublisher:Cengage Learning
- Elementary Statistics: Picturing the World (7th E...StatisticsISBN:9780134683416Author:Ron Larson, Betsy FarberPublisher:PEARSONThe Basic Practice of StatisticsStatisticsISBN:9781319042578Author:David S. Moore, William I. Notz, Michael A. FlignerPublisher:W. H. FreemanIntroduction to the Practice of StatisticsStatisticsISBN:9781319013387Author:David S. Moore, George P. McCabe, Bruce A. CraigPublisher:W. H. Freeman