Sam Wanted to Test a Claim About the Mean of a Population

question 44

Essay

Sam wanted to test a claim about the mean of a population whose standard deviation was unknown. He picked
a simple random sample of size 20 from the population. Lou wanted to test a claim about a mean of a different
population whose standard deviation was known. He picked a simple random sample of size 22 from that
population. George said that Sam would need to determine whether his sample was from a normally
distributed population because the population standard deviation was unknown. He said that Lou would not
need to do this since for his test the population standard deviation was known. Is George right?

---

Definitions:

Gantt Schedule Chart

A type of bar chart that illustrates a project schedule, showing the start and finish dates of the various components and elements of a project.

Monitoring Jobs

Involves the continuous observation and tracking of job progress and performance to ensure that it aligns with planned objectives and schedules.

Process Aid

denotes tools, materials, or information used to support and streamline operational processes, enhancing efficiency and effectiveness in production or administrative tasks.

Constant Work-In-Process

A production strategy aimed at limiting the amount of unfinished goods in the production process to reduce lead times and increase quality.