A Population Has a Standard Deviation of 50

question 65

Multiple Choice

A population has a standard deviation of 50.A random sample of 100 items from this population is selected.The sample mean is determined to be 600.At 95% confidence, the margin of error is

• A) 8.225.
• B) 8.3.
• C) 9.8.
• D) 9.92.

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