A Time Study of a Certain Service Task Found an Average

question 142

Essay

A time study of a certain service task found an average time of 15 minutes,with a standard deviation of 5 minutes.These figures were based on a sample of 100 measurements.Is the sample large enough that we are 95% confident that standard time is within ±5% of its true value?

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Definitions:

Political Negotiations

The process by which political representatives of different groups or countries come together to discuss and resolve issues of mutual interest, often to reach a compromise or formal agreement.

Elected Officials

Public figures who have been chosen through a democratic process, such as voting, to hold a specific public office.

Economic Policy

The strategies and actions employed by governments and central banks to regulate and stabilize the economy, including fiscal policy, monetary policy, and trade policy.

Diplomatic Weapon

The use of diplomatic measures such as negotiations, treaties, sanctions, and alliances as tools to influence or pressure other nations to achieve foreign policy objectives.