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A scientist wants to find the average mass of fish living in a large pond. So she will use the masses of a sample of fish from the pond to find the average mass.
Answer the questions below.

(a) Which unit(s) could be used for the unit of measurement? Check all that apply.

1.) minutes

2.) kilograms

3.) grams

4.) milligrams

5.) seconds

(b) Which of the procedures below would be the best way to find the average mass?


1.) Pick 2 fish from a shallow region of the pond and weigh each of them.

2.) Pick 42 fish from a shallow region of the pond and estimate their masses.

3.) Randomly pick 2 fish from the entire pond and estimate their masses.

4.) Randomly pick 42 fish from the entire pond and weigh each of them.

Respuesta :

shrekingtonmcgarthy

Answer:

A. 2, 3, and 4

B: 4

Step-by-step explanation:

Average mass is defined as, adding masses of all bodies and then divide by number of bodies.

(a). Kilograms, grams and milligrams

(b) Randomly pick 42 fish from the entire pond and weigh each of them.

(a). Since we are interested in the masses of the fish and not the time

so that, only unit of mass is to be considered.

Therefore,  Kilograms, grams and milligrams  are used to find the average mass.

(b). Since,  Random sampling is a part of the sampling technique in which each sample has an equal probability of being chosen

Therefore, Randomly pick 42 fish from the entire pond and measure their masses. This will provide a representative sample with no bias.

Learn more:

https://brainly.com/question/18060320

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