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yawa3891 [41]
3 years ago
15

A researcher wanted to study the effects of a certain chemical on cel growth. The chemical was to be applied at two different do

wsed, high and low, to two different types cell types, strain A and strain B. Each combination of dose and cell type was to be replicated ten times. To have a consistency from one replicate to the next, the researcher decided to use four lab technicians. One technician would be assigned the high dose with strain A. A second would be assigned the low dose with the strain A. The third would be assigned the high dose with strain B. A fourth would be assigned the low dose with Strain B. The assignment of lab technician to the replicates for a combination of dose and cell type would be randomized. A statistician told the researcher that the design could be improved by controlling confounding variables. Which of the following is potentially a confounding variable in this study?
A. Chemical used
B. Lab Technician
C. Dose
D. Cell type
E. Cell growth
Advanced Placement (AP)
1 answer:
anastassius [24]3 years ago
3 0

Answer:

Dose

Explanation:

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