When Used with Ofstream Objects, Operator! Is Not

question 6

Multiple Choice

When used with ofstream objects, operator! is not:

• A) Overloaded.
• B) Used to determine if the open operation succeeded.
• C) Used to close a file explicitly.
• D) Used to return a nonzero value if an error occurs.

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Definitions:

Significance Level

The probability of rejecting the null hypothesis in a statistical test when it is actually true, used as a benchmark to decide whether an observed result is statistically significant.

Hypotheses Testing

In statistics, a method that utilizes information from a sample group to evaluate a presumption about a population's parameter.

Kruskal-Wallis Test

A nonparametric test used to compare three or more independent samples to determine if there is a significant difference between their medians.

Ordinal Data

Data that can be ranked or ordered along some dimension but does not have a fixed distance between rankings.