A Simple Random Sample of the Running Time of Movies

question 27

Essay

A simple random sample of the running time of movies of 70 international movies resulted in a sample mean length of 112 minutes and a sample standard deviation of 7 minutes. Test the claim that international movies have a mean running time of more than 110 minutes at the 5% level of significance. Assume that the lengths of movies are normally distributed.

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Definitions:

Tactical Decisions

Short-term decisions made within the framework of strategic plans, focusing on day-to-day operations of an organization.

Lower-Level Managers

Managers operating at the lowest tier of an organization's hierarchy, directly overseeing the execution of tasks and the performance of front-line employees.

Short-Term Planning

The process of planning organizational strategies and actions for a period ranging from a few weeks to a year.

Reasoning Capabilities

The ability to make sense of information, form judgements, and draw conclusions based on logic and understanding.