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Researchers are interested in how long it takes people to complete the hobbit and orcs problem. Participants completed the problem in 660 seconds on average with a standard deviation of 120 seconds. The researchers realize the time included the 60 second distractor task at the beginning. If you subtract 60 seconds from each score, what is the new standard deviation?

Researchers are interested in how long it takes people to complete the hobbit and orcs problem. Participants completed the problem in 660 seconds on average with a standard deviation of 120 seconds. The researchers realize the time included the 60 second distractor task at the beginning. If you subtract 60 seconds from each score, what is the new standard deviation?

MATLAB: An Introduction with Applications
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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Researchers are interested in how long it takes people to complete the hobbit and orcs problem. Participants completed the problem in 660 seconds on average with a standard deviation of 120 seconds. The researchers realize the time included the 60 second distractor task at the beginning. If you subtract 60 seconds from each score, what is the new standard deviation?

Expert Solution
Step 1

let participants completed problem in time x.

μx= 660σx= 120now, y = x - 60then new S.D. σy = ?

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