A Scientist Is Hoping to Compare the Mean Levels of DDT

question 61

Multiple Choice

A scientist is hoping to compare the mean levels of DDT toxin found in three species of fish in a local river. He randomly samples 50 of each species to use in the analysis. For each fish, he measures the amount of DDT toxin present. Ideally he will be able to rank the species based on the mean level of toxin found in each of the three species. Identify the treatments for this study.

• A) The three fish species
• B) The 50 fish
• C) The amount of DDT in a fish
• D) The scientist

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Definitions:

Nylon Lock

A type of lock nut that uses a nylon insert to prevent loosening under vibration and torque.

Thread Pitch

The distance between threads on a screw or bolt, indicating the tightness or coarseness of the thread.

Bolt Size

The specification of a bolt, including diameter, length, and thread pattern, crucial for ensuring compatibility and strength in connections.

Diameter

A straight line passing from side to side through the center of a body or figure, especially a circle or sphere.