A manufacturer of chocolate chips would like to know whether its bag filling machine work correctly at the 437 gram setting. He believed that the machine is underfilling the bag. A 31 bag sample had a mean of 430 grams. Assume the population standard deviation is known to be 26. Is there sufficient evidence at the 0.05 level of significance that the bags are overfilled

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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A manufacturer of chocolate chips would like to know whether its bag filling machine work correctly at the 437 gram setting. He believed that the machine is underfilling the bag. A 31 bag sample had a mean of 430 grams. Assume the population standard deviation is known to be 26. Is there sufficient evidence at the 0.05 level of significance that the bags are overfilled?

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