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Studies Reported by IOM "Indicate That 400,000 Preventable Drug-Related Injuries

question 12

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Studies reported by IOM "indicate that 400,000 preventable drug-related injuries occur each year in hospitals."


Definitions:

Null Hypothesis

A default hypothesis that there is no effect or no difference, and any observed change is due to chance or sampling error.

Probability Level

A statistical threshold, often denoted by alpha, which determines the cutoff point at which a result is considered statistically significant.

Statistically Significant

Refers to a result that is unlikely to have occurred by chance alone, according to a predetermined threshold in statistical testing.

F-test

is a statistical test used to compare the variances of two populations, based on sample variances, to assess the equality of the populations' means.

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