Solve the Formula for the Indicated Variable $\mathrm { R } = \mathrm { nE } - \mathrm { nr }$

question 178

Multiple Choice

Solve the formula for the indicated variable.
- $\mathrm { R } = \mathrm { nE } - \mathrm { nr }$ , for $\mathrm { n }$

• A) \(\mathrm { n } = \frac { \mathrm { R } } { \mathrm { E } - \mathrm { r } }\)
• B) \(n = R - E + r\)
• C) \(\mathrm { n } = \mathrm { R } + \mathrm { nr } - \mathrm { E }\)
• D) \(n = \frac { R + n r } { E }\)

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Definitions:

Normally Distributed

Refers to a bell-shaped distribution that is symmetrical about its mean, often used as a model in statistics for real-valued random variables.

Standard Deviation

An indicator used to determine the extent of fluctuation or scatter among data points in a collection.

Central Limit Theorem

A statistical theory that states that given a sufficiently large sample size from a population with a finite level of variance, the mean of all samples from the same population will be approximately equal to the mean of the population.

Sampling Distribution

The distribution of a statistic (like the mean) that would result from taking a large number of samples from a population.