Concerning Inference on Two Population Proportions, It Is Appropriate to Use

question 43

Multiple Choice

Concerning inference on two population proportions, it is appropriate to use the pooled or combined estimate of the common population proportion when:

• A) .
• B) .
• C) ; that is, .
• D) anytime .

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Definitions:

Chebyshev's Theorem

A statistical theorem stating that for any real-valued random variable, a minimum proportion of values fall within a certain number of standard deviations from the mean, regardless of the shape of the distribution.

Normal Distribution

A symmetrical, bell-shaped distribution of data where most measurements are concentrated around the mean, describing many types of naturally occurring data.

Empirical Rules

statistical rules that apply to normal distributions, describing how many observations fall within certain standard deviations from the mean.

Label

A label is a piece of information attached to an object, product, or document that provides identification, description, warnings, or instructions.