Concept explainers
(a)
To calculate the difference (Clipboard A minus Clipboard B) in the
(a)

Answer to Problem 99E
Explanation of Solution
Michael wanted to conduct a survey to examine that are people influenced by the other people or not. Thus in this survey two clipboards were assigned to different groups of people and result was noted. For the Clipboard A the mean response for the group was
Thus the difference in the mean of the two clipboards can be calculated as:
Mean of Clipboard A minus Mean of Clipboard B.
Thus, we have:
Thus, we have
(b)
To explain what does the dot
(b)

Explanation of Solution
The dot
(c)
To use the result of the simulation to find out if the difference in means from part (a) is statistically significant or not and explain.
(c)

Explanation of Solution
The difference in means from part (a) is statistically not significant as there are other factors that can be involved in the study which can influence the result. So, just by looking at the differences cannot solve the accuracy of the result. Thus, we should consider other methods also to evaluate the survey that can give better result. And also that the study is deemed statistically significant if there's a very low probability the result could have occurred by chance.
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