A Laboratory Wishes to Compute a 95% Confidence Interval for the Mean

question 71

Multiple Choice

A laboratory wishes to compute a 95% confidence interval for the mean amount of cholesterol,in milligrams,in chicken eggs.They believe the population standard deviation to be 40 milligrams.How many eggs should they use if they want a margin of error of 20 milligrams?

• A)15
• B)17
• C)16
• D)18
• E)19

---

Definitions:

Unconscious Mind

Part of the mind that is not currently in focal awareness but influences thoughts, feelings, and behaviors.

Behavioral Consistency

The tendency for people to exhibit the same behaviors across different situations and over time.

Aggregate

A total or sum made from individual parts.

Blank Slate

The idea that individuals are born without built-in mental content and that all knowledge comes from experience or perception.