Why Is It Important to Check for Violations of Assumptions

question 79

Multiple Choice

Why is it important to check for violations of assumptions when hypothesis testing?

• A) It is a step in graphing the data, which is required for publishing scientific results.
• B) Specific assumptions must be violated before we can make inferences from our study sample to the overall population.
• C) Results from data analyses are valid only when assumptions have been violated.
• D) We are making inferences about the population of interest that will be maximally valid if specific requirements are met.

Use the t-distribution for hypothesis testing when the population standard deviation is unknown.

Conduct hypothesis testing for population means with known and unknown standard deviations.

Identify and apply the correct rejection region for hypothesis tests.

Comprehend the role and calculation of the t-statistic in hypothesis testing.

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Definitions:

Percents

A mathematical term representing a fraction of 100, used to denote a portion or share of a total.

Decimals

Numerical values expressed using a decimal system, involving a point to separate the whole number from the fractional part.

Mixed/Whole Numbers

Numbers consisting of both a whole number and a fractional part, usually written with the whole number and fraction separated by a space.

Rate

The ratio of change in one variable relative to another, often used in contexts of finance (interest rates), growth rates, or other measurements of change.