Use the Matrix Operations on a Graphing Calculator to Find

question 29

Essay

Use the matrix operations on a graphing calculator to find her income if increasing it by 20% would cause an increase in profit of 50%.(Round to the nearest thousand dollars.)

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Definitions:

Sample Variance

A measure of the dispersion or spread of a set of data points around their mean, calculated as the sum of the squared deviations from the mean, divided by the number of observations minus one.

Equal-variances Test

A statistical test used to determine if two or more samples have equal variances.

Unequal Variances Test

A statistical test used when comparing two groups that do not assume the variances of the groups are equal.

Normally Distributed

Describes data that follows a normal distribution characterized by a symmetric bell-shaped curve.