oahman1 oahman1

09-01-2021
Mathematics

contestada

Quick IM timed!!
A researcher is comparing three new formulas for grass killer. To conduct the experiment, the researcher purchases 30 pieces of sod from various vendors to use in the study. The 30 pieces of sod are laid out in three different areas. The researcher places three slips of paper in a bowl labeled formula 1, formula 2, and formula 3 and randomly picks a piece of paper to apply that formula to the sod in the first area. Then the researcher picks again and applies that formula to the second area. Finally, the last formula is used on the last area.

Which component is missing from the researcher’s process?

A The researcher should not have laid out the pieces of sod in different areas.
B The researcher did not randomly assign the pieces of sod to the treatment groups.
C The researcher did not randomly pick the vendors when purchasing the pieces of sod.
D The researcher did not use randomization when selecting the pieces of sod from the vendors.

Respuesta :

nicolewantscandy nicolewantscandy

13-01-2021

Answer:

The researcher did not randomly assign the pieces of sod to the treatment groups.

Step-by-step explanation:

Edge 2020/2021

Answer Link

mjosimeoni mjosimeoni

28-01-2021

Answer:

I think it is A

Step-by-step explanation:

This is becuase by putting the sod in different areas, confounding variables, such as shade and the quality of the soil, may be able to affect the results.

Answer Link

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