MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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7.
For numbers 6 to 10: The daily wage of a particular industry is normally distributed with a mean of 150 pesos. In
a random sample of 144 workers of a very large company in this industry, the mean daily wage was found to
be 148 pesos with a standard deviation of 10 pesos. Can this company be accused of paying inferior wages
(less than the usual) at a=5%?
7. A 90% confidence interval about the true mean daily wage of the workers is constructed as [148 ±
1.3708]. Which of the following is(are) TRUE?
I. We are 90% confident that the true mean daily wage of the workers is between 146.6292 and 149.3708
pesos.
II. If 1000 such confidence intervals are constructed, 900 of them will contain the true mean daily wage of
the workers.
O A.I only
O B. Il only
O C. Both I and II
O D. Neither I nor II
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Transcribed Image Text:For numbers 6 to 10: The daily wage of a particular industry is normally distributed with a mean of 150 pesos. In a random sample of 144 workers of a very large company in this industry, the mean daily wage was found to be 148 pesos with a standard deviation of 10 pesos. Can this company be accused of paying inferior wages (less than the usual) at a=5%? 7. A 90% confidence interval about the true mean daily wage of the workers is constructed as [148 ± 1.3708]. Which of the following is(are) TRUE? I. We are 90% confident that the true mean daily wage of the workers is between 146.6292 and 149.3708 pesos. II. If 1000 such confidence intervals are constructed, 900 of them will contain the true mean daily wage of the workers. O A.I only O B. Il only O C. Both I and II O D. Neither I nor II
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