A manager is interested in determining if the population standard

MATLAB: An Introduction with Applications
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ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
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O A. 13.84
B. 10.117
C. 8.97
D. 15.87
E. 6.44
Transcribed Image Text:O A. 13.84 B. 10.117 C. 8.97 D. 15.87 E. 6.44
A manager is interested in
determining if the
population standard
deviation has dropped
below 130. Based on a
sample of n = 20 items
selected randomly from
the population, what is
the critical chi-squared
value needed to conduct
the appropriate
hypothesis test at a 0.05
significance level. The
sample standard
deviation is 105.
Transcribed Image Text:A manager is interested in determining if the population standard deviation has dropped below 130. Based on a sample of n = 20 items selected randomly from the population, what is the critical chi-squared value needed to conduct the appropriate hypothesis test at a 0.05 significance level. The sample standard deviation is 105.
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