Exhibit 8-2
a Random Sample of 121 Automobiles Traveling on an Interstate

question 15

Multiple Choice

Exhibit 8-2
A random sample of 121 automobiles traveling on an interstate showed an average speed of 65 mph. From past information, it is known that the standard deviation of the population is 22 mph.
-Refer to Exhibit 8-2. If we are interested in determining an interval estimate for $\mu$ at 96.6% confidence, the Z value to use is

• A)1.96
• B)0.483
• C)2.12
• D)1.645

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Definitions:

Intuition

The ability to understand something instinctively, without the need for conscious reasoning.

Rationality

The quality of being based on or in accordance with reason or logic.

Quick Decisions

Choices or judgments made rapidly without extensive deliberation, often relying on intuition or immediate perception.

Framing

The way information is presented to the public, which can influence perception and understanding.