Match the Graph with Its Function Using the X-Intercepts $y = x ^ { 4 } + 2 x ^ { 2 } - 1$

question 347

Multiple Choice

Match the graph with its function using the x-intercepts.
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• A) \(y = x ^ { 4 } + 2 x ^ { 2 } - 1\)
• B) \(y = x ^ { 4 } + 2 x ^ { 2 } + 1\)
• C) \(y = x ^ { 4 } - 2 x ^ { 2 } + 1\)
• D) \(y = x ^ { 4 } - 2 x ^ { 2 } - 1\)

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Definitions:

Plus Four Estimate

A technique in constructing a confidence interval that adds four to the sample size (two successes and two failures) for estimating proportions with small samples.

Standard Error

A measure of the dispersion of sample mean estimates from the population mean.

True Proportion

The actual proportion of a particular outcome within the entire population.

Confidence Interval

An estimated range of values calculated from a given set of sample data, intended to offer a degree of certainty that a population parameter lies within it.