As scientist conducting an experiment you need to have an experimental group and a control group for testing a hypothesis .if you were a scientist and with the knowledge you have what kind of hypothesis would you test? Provide an example of an experiment you might conduct.who would be in your control/experimental group?
true/false, during a scientific experiment, the control group is used to directly test or measure the consequences of a variable in the study
In a single-group design in which treatments are alternated (ABAB design), what is the purpose of conducting multiple initial observations before any treatment is given? 1. pretest researcher assumptions about the study sample 2. establish a baseline for comparison post-treatment 3. establish which group gets the initial “A” treatment 4. to gather information for modifying the treatment
Qualitative Analysis for group 1: What is the purpose of precipitating the Ag+, Pb2+, and Hg22+ ions as their chloride salts instead of their sulfide salts at the beginning of the experiment?
Chapt 1.3. Identify the use of appropriate experiment e Page(s) 9-10 In a study published in the journal Environmental Science and Technology in 2001, scientists were testing the endocrine disruptor hypothesis, which states that certain chemicals can interfere with hormone regulation in many organisms, leading to disorders such as the feminization of males. The scientists used juvenile fish and exposed them to either tap water or varying concentrations of treated sewage effluent (containing an array of chemicals). For this experiment,...
PRELAB EXERCISE EXPERIMENT 21 Synthesis of Aspirin (Acetylsalicylic Acid) What is the purpose of sulfuric acid or phosphoric acid used in the acetylation reaction? Use equations to explain this purpose. The procedure calls for cautious addition of water to the reaction mixture while it is still hot. What purpose does the addition of water serve and why should the addition be done while the reaction mixture is hot? Provide an equation for the reaction involved.Using the quantities of salicylic acid and acetic anhydride...
Design an experiment that would directly test the hypothesis of the following scenario. Identify the control group, independent variable, and dependent variable. Hypothesis: The plant species Acidicus plantus grows best at pH 2-4.
Subject bias can occur in an experiment when the participants are aware of the purpose of the study and respond in a way that they think the researchers want. For example, if participants believe they are in a study to test if coffee improves your mood, those who drank coffee might claim to be happier than they really are. Based on the information given, which of the following experiments is most likely to have the issue of a control or...
In the intervention group, 210 of 1267 girls had a pregnancy event (birth or induced abortion) In the comparison group, 168 of 1567 girls had a pregnancy event 1. Using these numbers, prepare a contingency table like figure: Intervention Control Total Pregnancy Event No Pregnancy Event Total 2. Calculate the relative risk for pregnancy between the intervention and comparison group. 3. Based on your calculation of the relative risk, what effect did participation in the infant simulator intervention have on pregnancy...
In your own words define the following terms: A. Control group B. Experimental group C. Independent variable D. Dependent variable Then decide how you will apply each one in your research of candida glabrata. * What is your control group? - only one ·What is are your experimental group(s)-at least one but could be more What is your independent variable? - only one What are your dependent variables? - at least two * .