Patients Should Be Advised Not to Overfill the Trays with the Whitening

question 3

Multiple Choice

Patients should be advised not to overfill the trays with the whitening agent because

• A) The agent is toxic if ingested.
• B) Doing so can lead to gingival irritation.
• C) The agent is expensive.
• D) Doing so will cause sensitivity.

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Definitions:

Z-Test

This is a statistical test used to determine whether two population means are different when the variances are known and the sample size is large.

Chi-Squared Test

A statistical method applied to ascertain whether a meaningful relationship exists between two variables of categorical nature.

Nominal Data

Data categorized into distinctly named groups without any natural order or ranking among them.

Chi-Squared Test

A statistical hypothesis test used to determine whether there is a significant difference between the expected frequencies and the observed frequencies in one or more categories.