The Weight of a Product Is Measured in Pounds

question 24

Multiple Choice

The weight of a product is measured in pounds.A sample of 50 units is taken from a batch.The sample yielded = 75 lbs. ,and we know that σ² = 100 lbs.Calculate a 99 percent confidence interval for μ.

• A)[71.36,78.64]
• B)[74.25,75.75]
• C)[38.58,111.42]
• D)[71.71,78.29]

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