A Random Sample of 31 Charge Sales Showed a Sample

question 13

Multiple Choice

A random sample of 31 charge sales showed a sample standard deviation of $50. A 90% confidence interval estimate of the population standard deviation is

• A)1,715.10 to 4,055.68
• B)1,596.45 to 4,466.73
• C)39.96 to 66.83
• D)41.39 to 63.68

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Definitions:

Lottery

A gambling game or method of raising money wherein participants select numbers or symbols in the hope of winning prizes.

Frustrating Event

An incident that causes feelings of disappointment, annoyance, or discouragement due to obstacles or challenges.

Exam

An assessment used to measure a person's knowledge, skills, or fitness in a particular area or subject.

Traffic

The movement of vehicles, ships, persons, or goods along a path of travel, often leading to congestion on roads and highways.