A Manager Wants to Determine the Proportion of Time a Cashier

question 105

Multiple Choice

A manager wants to determine the proportion of time a cashier is idle. A work sampling method was used, and the idle time was found to be 20 percent based on 100 observations. If the manager wants a + 0.05 with a 95 percent confidence level (z = 1.96) , how many MORE observations are needed?

• A) fewer than or equal to 200
• B) greater than 200 but fewer than or equal to 300
• C) greater than 300 but fewer than or equal to 400
• D) greater than 400

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Definitions:

Treaty of Westphalia

The Treaty of Westphalia, signed in 1648, ended the Thirty Years' War in Europe, marking the beginning of the modern state system by recognizing the sovereignty of nations.

Royal Authority

The power and right of a monarch to rule a kingdom or empire, typically involving the exercise of sovereignty, law-making, and governance.

Henry IV

King of England from 1399 to 1413, the first monarch of the House of Lancaster, whose reign was marred by ongoing conflict with his subjects and threats of rebellion.

Treaty of Westphalia

A series of peace treaties signed in 1648 that ended the Thirty Years' War in Europe, marked a turning point in international law, and established sovereign states.