Advanced Placement (AP), 05.11.2020 18:30, michaela134
A researcher wanted to study the effects of a certain chemical on cel growth. The chemical was to be applied at two different dowsed, 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
Answers: 1
Advanced Placement (AP), 22.06.2019 07:50, hall7948
Aatividade em equipe consiste na sistematizaç? o crĂtica sobre empreendedorismo. dever? o serem retomadas as equipes feitas na semana anterior (de 3 a 4 estudantes). os estudantes dever? o retomar o negĂłcio e as demais caracterĂsticas que foram identificados na semana anterior (principais concorrentes do negĂłcio, modismo ou uma tend? ncia e o risco em iniciar o negĂłcio), para desenvolverem um plano para iniciar o negĂłcio. desta forma, dever? o pensar em valores fictĂcios de máquinas e equipamentos, aluguel ou compra do local, propaganda, e estratĂ©gias para se manter no mercado.
Answers: 3
Advanced Placement (AP), 24.06.2019 07:00, tangia
Gretta needs a $300,000 mortgage and is offered two choices. the monthly payments for the fixed rate and predicted payments for the arm are shown. adjustable rate mortgage year monthly payment 1-15 $1,610.46 adjustable rate mortgage year monthly payment 1-5 $1,520.06 6-15 $1,728.54 what is the difference between the total costs of the mortgages rounded to the nearest hundred? $8,700 $1,700 $15,800 $5,000
Answers: 1
Advanced Placement (AP), 24.06.2019 22:30, btsheygirl
Which of the following is not true about hydroelectricity a. use of gravitational force of flowing water b. its the most widely used renewable energy c. it has a high output of co2 that fossil fuels d. it has no direct waste asap
Answers: 1
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