In Checking Normality Assumptions for Using the T Test When

question 101

Multiple Choice

In checking normality assumptions for using the t test when σ is not known,which of the following is not true?

• A)The sample mean is close to the sample median.
• B)The normal probability plot is approximately a straight line.
• C)The sample size to be used is not a factor.
• D)The boxplot of the sample appears approximately symmetrical.

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Definitions:

Uniform Distribution

A type of probability distribution in which all outcomes are equally likely; any continuous range or discrete set of values has the same probability.

Probability Density Function

A function that describes the likelihood of a continuous random variable to take on a given value.

Assembly Operation

The process or action of putting together components or parts to form a finished product in manufacturing.

National Standardized

Refers to a consistent set of criteria or tests applied across a nation to evaluate and compare performance or quality systematically.