Background (Motivation): Recovery curve after concussion for student athletes The (fictitious) Midwest Journal of Medicine recently published a study of the recovery curve after concussions for student athletes. Student athletes complete a computer-based neurocognitive assessment when they first enter their university and are given a baseline concussion score. If a student athlete becomes concussed, they are asked to perform the assessments again and again until their neurocognitive assessment score returns to their baseline score. You believe that hand dominance may have an impact on the study results and observe that this wasn't controlled for in the original study. To show the importance of controlling for hand dominance when performing computer-based evaluations, you decide to conduct your own study among undergraduate students at UM. Your Study: Effects of hand dominance on various computer-based activities for undergraduate students at UM. You have two different datasets available to you coming from a random sample of undergraduate students at UM. Each student was asked to perform a series of two computer-based activities that measure reaction time e and memory, 2. Each student performed each activity twice; first using their dominant hand and again using their non dominant hand. You will be using these study results to evaluate if hand dominance has an effect on reaction time and memory when measured through these two computer based activities. Below is a summary of the data collected for each activity:

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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This is NOT a writing assignment, the question is just detailed.

Use the following prompt and data to answer subquestions 1.a and 1.b

1.a) Is there a difference in performance, on average, when undergraduate students at UM use their dominant vs. non-dominant hands during reaction time and memory tests
1.b) Give recommendations to the original concussion researchers about how they can adjust a similar future study on concussions.

Background (Motivation): Recovery curve after concussion for student athletes
The (fictitious) Midwest Journal of Medicine recently published a study of the recovery curve after
concussions for student athletes. Student athletes complete a computer-based neurocognitive assessment
when they first enter their university and are given a baseline concussion score. If a student athlete
becomes concussed, they are asked to perform the assessments again and again until their neurocognitive
assessment score returns to their baseline score.
You believe that hand dominance may have an impact on the study results and observe that this wasn't
controlled for in the original study. To show the importance of controlling for hand dominance when
performing computer-based evaluations, you decide to conduct your own study among undergraduate
students at UM.
Your Study: Effects of hand dominance on various computer-based activities for undergraduate students at
UM.
You have two different datasets available to you coming from a random sample of undergraduate students
at UM. Each student was asked to perform a series of two computer-based activities that measure reaction
time e and memory 2 . Each student performed each activity twice; fırst using their dominant hand and
again using their non dominant hand. You will be using these study results to evaluate if hand dominance
has an effect on reaction time and memory when measured through these two computer based activities.
Below is a summary of the data collected for each activity:

Table 1: Experiment 1- Reaction Time Activity
Difference in completion time
Completion time
(Dominant Hand) | (Non-Dominant Hand) (Dominant - Non-Dominant)
Completion time
Number of
observations
1491
1491
1491
Sample mean
0.4259
0.482
-0.056
Sample standard
deviation
0.153
0.191
0.140
Table 2: Experiment 2 - Memory Assessment Activity
Completion time
|(Dominant Hand) (Non-Dominant Hand)
Difference in completion time
(Dominant - Non-Dominant)
Completion time
Number of
observations
1421
1421
1421
Sample mean
41.962
52.043
-10.080
Sample standard
deviation
10.202
14.234
12.747

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