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MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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Question
The mean of a national test is known to be 275 with a standard deviation of 7. A group of 10 students had the following scores on the test: 260, 258, 277, 290, 254, 268, 270, 242, 265, and 272.
Find μ and x ̅.
a
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μ = 265.6 and x ̅ = 275
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b
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μ = 275 and x ̅ = 7
|
c
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μ = 7 and x ̅ = 265.6
|
d
|
μ = 275 and x ̅ = 265.6
|
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