The Weight of a Product Is Measured in Pounds

question 103

Multiple Choice

The weight of a product is measured in pounds.A sample of 50 units is taken from a recent production.The sample yielded = 75 lb,and we know that σ² = 100 lb.Calculate a 90 percent confidence interval for μ.

• A) [73.19,76.81]
• B) [51.74,98.26]
• C) [72.67,77.33]
• D) [67.50,82.50]

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