How Many Observations Should Be Made If She Wants to Be

question 100

Multiple Choice

How many observations should be made if she wants to be 0.8664 confident that the maximum error in the observed time is 0.5 second? Assume that the standard deviation of the task time is 4 seconds.

• A)10
• B)12
• C)120
• D)144
• E)169

---

Definitions:

Independence

The state or quality of being self-reliant and free from outside control or not depending on another's authority, support, or resources.

New Career

The beginning or pursuit of a different job path or professional direction.

Sandwich Generation

People who take care of both children and aging parents at the same time.

Children

Young human beings who are not yet adults, often characterized by rapid physical growth and developmental changes.