What Does Opening a Database in Exclusive Mode Assure

question 70

Multiple Choice

What does opening a database in exclusive mode assure?

• A)That a password has been set previously
• B)That no changes can be made to the structure of the database
• C)There is no such thing as exclusive mode.
• D)That you are the only person with that database open

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Definitions:

Pooled Variance Estimator

An estimate of variance that combines the variances from two or more samples, assuming that they come from populations with the same variance.

MSE from ANOVA

Mean Square Error derived from Analysis of Variance, indicating the average of the squares of the deviations of observations from their group means.

Equal Variances T-Test

A statistical test used to determine if two populations have equal variances, assuming that the populations are normally distributed and independent.

Completely Randomized Design

A research design in which subjects are randomly assigned to experimental groups in an entirely unsystematic way, ensuring each subject has an equal chance of being assigned to any group.