Question: 7. A soft drink bottle filling machine is known to have a mean of 200 ml and a standard variation of 10 ml. The quality

7. A soft drink bottle filling machine is known to have a mean of 200 ml and a standard variation of 10 ml. The quality control manager took a random sample of the filled bottles and found the sample mean to be 215 ml. She assumed the sample must not be repre- sentative. Do you agree with the conclusion made by the quality control manager? Justify your answer.

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