A reseacher has conducted an experiment to investigate whether chewing gum influences concentration. Participants were matched on age and gender. She firstly recorded how many changes were detected in a 'spot-the-difference' puzzle by people not chewing gum when completing the task, then compared this to the matched group who did chew gum during the task. The results were then compared. a) Write a research aim for this experiment. b)write null hypothesis for this experiment. c)what is thr independent variable and dependent variable in this investigation? d)Outline how you could select a sample that would be representative. e)Explain how multistage sampling is performed.
A reseacher has conducted an experiment to investigate whether chewing gum influences concentration. Participants were matched on age and gender. She firstly recorded how many changes were detected in a 'spot-the-difference' puzzle by people not chewing gum when completing the task, then compared this to the matched group who did chew gum during the task. The results were then compared. a) Write a research aim for this experiment. b)write null hypothesis for this experiment. c)what is thr independent variable and dependent variable in this investigation? d)Outline how you could select a sample that would be representative. e)Explain how multistage sampling is performed.
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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A reseacher has conducted an experiment to investigate whether chewing gum influences concentration. Participants were matched on age and gender. She firstly
recorded how many changes were detected in a 'spot-the-difference' puzzle by people
not chewing gum when completing the task, then compared this to the matched group
who did chew gum during the task. The results were then compared.
a) Write a research aim for this experiment.
b)write null hypothesis for this experiment.
c)what is thr independent variable and dependent variable in this investigation?
d)Outline how you could select a sample that would be representative.
e)Explain how multistage sampling is performed.
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