The EPA Has Stipulated That the PSI,"Pollution Standard Index" for Clean

question 54

Multiple Choice

The EPA has stipulated that the PSI,"Pollution Standard Index" for clean air standards is to be no more than 100 on the average.A random sample of 9 days for the city of Acorn showed PSI readings of 144,85,90,120,150,105,93,130 and 115. Assume the population of PSI readings is highly non-normal.Is there significant evidence to conclude that Acorn's air is dirtier than the stipulated clean air standards? Test at $\alpha$ = .05.

• A)Reject the null hypothesis
• B)Fail to reject the null hypothesis

---

Definitions:

Centipedes

Arthropods belonging to the class Chilopoda, characterized by long bodies with one pair of legs per body segment, and predators to insects.

Mites

Small arthropods belonging to the subclass Acarina (including ticks) that can live in diverse environments, including soil, water, and as parasites on plants and animals.

Nudibranch Mollusks

Colorful sea slugs known for their striking forms and colors, which have shed their shells during evolutionary development.

Tracheal Tubes

A system of branching air ducts within insects that spread across the body to facilitate the exchange of gases.