A Phone Service Charges 3

question 80

Essay

A phone service charges 3.1 cents per minute for the first 30 minutes and 6 cents per minute thereafter.
(a) Write this information in the form of a simplified piecewise-defined
function and state the effective domain for each piece.
(b) Sketch the graph.
(c) Find the cost of a 48-minute phone call.

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Definitions:

Independent-Means T Test

An analytical technique employed to assess if the averages of two distinct groups differ significantly in a statistical context.

Elements

The basic constituents of a data set, or the simplest units of which a substance or system is composed.

Effect Size

Effect size is a quantitative measure of the strength of a phenomenon, indicating the magnitude of a relationship or difference between groups in a statistical analysis.

T Test

An analytical technique comparing the averages of two groups to ascertain if their differences are statistically significant.