The Manager of a Grocery Store Has Taken a Random

question 40

Multiple Choice

The manager of a grocery store has taken a random sample of 100 customers.The average length of time it took these 100 customers to check out was 3 minutes.It is known that the standard deviation of the population of checkout times is 1 minute.The 95% confidence interval for the true average checkout time (in minutes) is

• A) 2.5 to 3.5.
• B) 1.36 to 4.64.
• C) 1 to 5.
• D) 2.804 to 3.196.

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Definitions:

Rational

Based on or in accordance with reason or logic; a way of thinking or decision-making that is logical and based on facts and evidence.

Available Information

Refers to data or knowledge that can be accessed by individuals or systems at a given time.

Optimizing Decision

A decision that chooses the alternative giving the absolute best solution to a problem.

Symptoms

Observable signs or indicators of a condition or trend, typically referring to manifestations of an underlying issue or disease.