To Estimate the Average Annual Expenses of Students on Books

question 81

Multiple Choice

To estimate the average annual expenses of students on books and class materials, a sample of size 36 is taken. The sample mean is $850 and the sample standard deviation is $54. A 99 percent confidence interval for the population mean is:

• A)$823.72 to $876.28
• B)$832.36 to $867.64
• C)$826.82 to $873.18
• D)$825.48 to $874.52

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Definitions:

Civil War

A war between groups within the same country or state, often involving a struggle for power, territory, or ideological dominance.

Era of the Trust

A historical period in the late 19th and early 20th century marked by the rise and dominance of large business monopolies and trusts in the United States.

19th Century

The period from January 1, 1801, to December 31, 1900, marked by significant industrial, cultural, and political changes worldwide.

Clayton Act

A U.S. antitrust law enacted in 1914 aimed at preventing anticompetitive practices in their incipiency.