What Sample Size Is Needed to Estimate with 95 Percent

question 98

Multiple Choice

What sample size is needed to estimate with 95 percent confidence the mean intake of calcium within 20 units of the true mean if the intake is normal with a variance of 1900 units?

• A)34,671
• B)187
• C)32
• D)19

---

Definitions:

Centralized Tactical Program

A strategy or operation managed from a single, central location or authority, focusing on short-term goals or responses in a specific area such as military, security, or business operations.

Specialized Skill

A specific ability or expertise that is developed through training or experience and is necessary for certain occupations or tasks.

Inimitable Corporate Culture

A unique set of business practices, traditions, and values that cannot be easily replicated by competitors.

Southwest Airlines

An American airline company known for its low-cost travel options and extensive domestic network.