The Weight of a Product Is Measured in Pounds

question 58

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 95 percent confidence interval for μ.

• A) [71.25, 78.75]
• B) [72.23, 77.77]
• C) [47.28, 102.72]
• D) [72.67, 77.33]

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