An Ink Cartridge for a Laser Printer Is Advertised to Print

question 87

Essay

An ink cartridge for a laser printer is advertised to print an average of 10,000 pages. A
random sample of eight businesses that have recently bought this cartridge are asked to
report the number of pages printed by a single cartridge. The results are shown. $\begin{array} { l l l l } 9771 & 9811 & 9885 & 9914 \\ 9975 & 10,079 & 10,145 & 10,214 \end{array}$
Assume that the data belong to a normal population. Test the null hypothesis that the mean number of pages is 10,000 against the alternative hypothesis $\mu \neq 10,000$ . Use $\alpha = .10$ .

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Definitions:

Self-confidence

The belief in one's own abilities, qualities, and judgment, contributing to a person's self-esteem and overall sense of value.

Self-confidence

The belief in one's own abilities and judgement.

Peak Performance

Achieving the highest level of performance capability in any activity, often characterized by optimal functioning and exceptional achievement.

Codependent

A psychological condition or a relationship in which a person is excessively emotionally or psychologically reliant on another, especially in cases of addiction.