2. According to a factory employer, the mean working time of workers in the factory is 10 hours with a standard deviation of 0.5 hours. A researcher interviewed 50% of the employees and found out that their mean working time is 12 hours with a standard deviation of 1 hour, the alpha level is 0.05. 3. A random sample of 200 students got a mean score of 70 with a standard deviation score of 5 in a knowledge test in mathematics. In the standardization of the test, u= 60 with o=10.

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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2. According to a factory employer, the mean working time of workers in the factory is 10 hours with a
standard deviation of 0.5 hours. A researcher interviewed 50% of the employees and found out that
their mean working time is 12 hours with a standard deviation of 1 hour, the alpha level is 0.05.
3. A random sample of 200 students got a mean score of 70 with a standard deviation score of 5 in a
knowledge test in mathematics. In the standardization of the test, u= 60 with o=10.
Transcribed Image Text:2. According to a factory employer, the mean working time of workers in the factory is 10 hours with a standard deviation of 0.5 hours. A researcher interviewed 50% of the employees and found out that their mean working time is 12 hours with a standard deviation of 1 hour, the alpha level is 0.05. 3. A random sample of 200 students got a mean score of 70 with a standard deviation score of 5 in a knowledge test in mathematics. In the standardization of the test, u= 60 with o=10.
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