Fisher-Lopez Wants to Determine the Average Age of Customers Who

question 22

Multiple Choice

Fisher-Lopez wants to determine the average age of customers who purchase products through its website.You've contacted a simple random sample of 5 customers, with the following results: Customer Age: 26, 21, 19, 18, 26
Assume the population distribution of customer ages is normal.Build a 90% confidence interval estimate of the average age of this customer population and report the upper bound for your interval.

• A)25.86
• B)26.12
• C)24.26
• D)26.17
• E)25.62

---

Definitions:

Professionalism

The conduct, aims, or qualities characterized by a conforming to the technical and ethical standards of a profession, displaying competence, skill, and good judgment.

High Standards

The expectation or requirement for excellence or a high degree of quality in a particular area.

High Earnings

describe a significant amount of income or profit, typically above the average or expected in a certain context or profession.

Dropout Rates

The percentage of individuals who fail to complete a particular educational level or program.