Exhibit 6-7 The Weight of Items Produced by a Machine Is Normally

question 46

Multiple Choice

Exhibit 6-7
The weight of items produced by a machine is normally distributed with a mean of 8 ounces and a standard deviation of 2 ounces.
-Refer to Exhibit 6-7. What is the probability that a randomly selected item weighs exactly 8 ounces?

• A)0.5
• B)1.0
• C)0.3413
• D)0.0000

---

Definitions:

Noise

Unwanted sound that is loud, unpleasant, or causes disturbance.

Correlational Study

A type of research design where the relationship between two variables is examined, without determining cause and effect.

Independent Variable

The factor in an experiment that the researcher alters or controls to see how it impacts the dependent variable.

Independent Variable

A variable in an experiment that is manipulated or changed by the researcher to observe its effects on the dependent variable.