I want to study whether or not distractions in the environment will affect memory performance. I recruit 25 students to take part in my study and I randomly assign them into one of two groups: a memory task in a distraction free environment or a memory task in an environment where several distractions will be presented. I measure the number of errors that each participant makes in their respective conditions. Test the hypothesis that those in the distracted group have more errors than those in the no distraction group at an alpha of 0.05. Distraction Free Environment Number of errors made Environment with Distraction Number of Errors made 2 3 5 5 2 2 3 2 1 6 2 5 4 4 0 4 2 2 1 3 1 3 0 1 2 What is your pooled sample variance and estimated standard error? What is your obtained t statistic? What conclusion do you draw?
I want to study whether or not distractions in the environment will affect memory performance. I recruit 25 students to take part in my study and I randomly assign them into one of two groups: a memory task in a distraction free environment or a memory task in an environment where several distractions will be presented. I measure the number of errors that each participant makes in their respective conditions. Test the hypothesis that those in the distracted group have more errors than those in the no distraction group at an alpha of 0.05. Distraction Free Environment Number of errors made Environment with Distraction Number of Errors made 2 3 5 5 2 2 3 2 1 6 2 5 4 4 0 4 2 2 1 3 1 3 0 1 2 What is your pooled sample variance and estimated standard error? What is your obtained t statistic? What conclusion do you draw?
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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I want to study whether or not distractions in the environment will affect memory performance. I recruit 25 students to take part in my study and I randomly assign them into one of two groups: a memory task in a distraction free environment or a memory task in an environment where several distractions will be presented. I measure the number of errors that each participant makes in their respective conditions. Test the hypothesis that those in the distracted group have more errors than those in the no distraction group at an alpha of 0.05.
Distraction Free Environment Number of errors made |
Environment with Distraction Number of Errors made |
2 |
3 |
5 |
5 |
2 |
2 |
3 |
2 |
1 |
6 |
2 |
5 |
4 |
4 |
0 |
4 |
2 |
2 |
1 |
3 |
1 |
3 |
0 |
1 |
2 |
- What is your pooled sample variance and estimated standard error?
- What is your obtained t statistic?
- What conclusion do you draw?

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I want to study whether or not distractions in the environment will affect memory performance. I recruit 25 students to take part
in my study and I randomly assign them into one of two groups: a memory task in a distraction free environment or a memory
ask in an environment where several distractions will be presented. I measure the number of errors that each participant makes in
their respective conditions. Test the hypothesis that those in the distracted group have more errors than those in the no distraction
I
group at an alpha of 0.05.
Distraction Free Environment
Environment with Distraction
Number of errors made
Number of Errors made
3
2
2
2.
2
9.
5
4
4.
2
2
3
1.
3
f. What is your pooled sample variance and estimated standard error?
h. What is your obtained t statistic?
i. What conclusion do you draw?
19-5
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