In a Manufacturing Process,a Random Sample of 9 Bolts Has

question 132

Multiple Choice

In a manufacturing process,a random sample of 9 bolts has a mean length of 3 inches with a variance of .09.What is the 90 percent confidence interval for the true mean length of the bolt?

• A)2.8355 to 3.1645
• B)2.5065 to 3.4935
• C)2.4420 to 3.5580
• D)2.8140 to 3.1860
• E)2.9442 to 3.0558

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Definitions:

Underground Railroad

A network of secret routes and safe houses used in the United States during the 19th century to help enslaved African Americans escape to free states and Canada.

Historical Significance

The importance or impact that a particular event, figure, or development has had in history, influencing the future or shaping societal norms.

Slave Resistance

Acts of defiance or rebellion by enslaved people against their conditions and slaveholders.

Frederick Douglass

An African American social reformer, abolitionist, orator, writer, and statesman who escaped from slavery and became a leader of the abolitionist movement.