BIOLOGY
4th Edition
ISBN: 9781266739606
Author: Hoefnagels
Publisher: MCG
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Chapter 1, Problem 12WIO
Design an experiment to test the following hypothesis: “Eating chocolate causes z its.” Include
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A business researcher is hired by a specialty retail firm. The retailer is trying to decide what level of lighting and what temperature they should maintain in its stores to maximize sales. Identify the independent variable and dependent variable in this case. How would the independent variable be manipulated to measure differences across the dependent variable. Include details about the experimental design including the experimental groups.
A controlled experiment
O includes at least two groups, one differing from the other by two or more
variables
includes at least two groups, one of which does not receive the experimental
treatment
is repeated many times to ensure that the results are accurate
includes one group for which the scientist controls all variables
In a controlled experiment all of the variables are kept the same in order to contsistent. there is only one variable there is change for these kind of studies and it is known as variable
Chapter 1 Solutions
BIOLOGY
Ch. 1.1 - Does any nonliving object possess all of the...Ch. 1.1 - Prob. 2MCCh. 1.1 - The bacteria in figure 1.8 reproduce asexually,...Ch. 1.2 - What are the goals of taxonomy?Ch. 1.2 - How are domains related to kingdoms?Ch. 1.2 - List and describe the four main groups of...Ch. 1.3 - Identify the elements of the experiment summarized...Ch. 1.3 - Prob. 2MCCh. 1.3 - What is the difference between a hypothesis and a...Ch. 1.3 - Prob. 4MC
Ch. 1.3 - Compare and contrast science and technology.Ch. 1.4 - Prob. 1MCCh. 1.4 - How does this story illustrate discovery science?Ch. 1 - Which of the following is smaller than an...Ch. 1 - All of the following are characteristics of life...Ch. 1 - The concentration of salts in blood remains...Ch. 1 - Because plants extract nutrients from soil and use...Ch. 1 - Evolution through natural selection will occur...Ch. 1 - Homo sapiens is the scientific name for humans. It...Ch. 1 - In an experiment to test the effect of temperature...Ch. 1 - A scientist has just observed a new phenomenon and...Ch. 1 - Prob. 9MCQCh. 1 - Which of the following statements is false? a....Ch. 1 - Describe each of the five characteristics of life,...Ch. 1 - Imagine two related species of single-celled...Ch. 1 - Prob. 3WIOCh. 1 - Think of an analogy that will help you remember...Ch. 1 - Other than the examples given in the text name an...Ch. 1 - Draw and explain the relationship between...Ch. 1 - Prob. 7WIOCh. 1 - Prob. 8WIOCh. 1 - How are the members of the three domains similar?...Ch. 1 - List each step of the scientific method and...Ch. 1 - Give two examples of questions that you cannot...Ch. 1 - Design an experiment to test the following...Ch. 1 - Prob. 1PITCh. 1 - Prob. 2PITCh. 1 - Prob. 3PIT
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- Which of these factors is commonly manipulated during an experiment? independent variable dependent variable controlled variable continuous variable When carrying out an experiment, a scientist will observe changes in which factor? confounding variable dependent variable controlled variable independent variable Which of these factors remains intentionally unchanged in an experiment? controlled variable continuous variable independent variable dependent variablearrow_forwardDesign a (hypothetical) experiment that adheres to the Scientific Method. Be sure to include all the necessary requirements at each step and give examples at all of the steps. Start with an observation, whether it's real or made up, state the null hypothesis, and design an experiment (including an experimental and control group, random sampling, sample size, and reproducibility) that will allow the student to reject or fail to reject the hypothesis, and state (hypothetical) 'actual' results and the appropriate conclusion to draw from those results.arrow_forwardThe null hypothesis is: That the measured value is zero That the proposed model is not correct and the measured factors have no effect on the pattern That the proposed model is correct and perfectly explains the pattern That the experiment is null and voidarrow_forward
- You are designing an experiment to test the following hypothesis: Temperature affects the ability of students to think clearly, and, therefore, students in a hotter room will have lower exam scores than students in a cooler room. For your experiment, list the following Sample size Independent variable Dependent variable Control group Experimental group Standardized variables How will you ensure that you have a random sample?arrow_forwardIn the experiment described above, state what each of these parts of the experiment was: Independent variable Dependent variable Control group Experimental group One controlled variablearrow_forwardIn the experiment described above, specifically state what each of these parts of the experiment was: Independent variable Dependent variable Control group Experimental group One controlled variablearrow_forward
- The 'control group' is an essential component of an experiment. This is because 1. A control group allows one to determine if a particular result is due to the experimental variable. 2. No, it's not essential in experimentation. A control group is not always necessary it depends on the experiment. 3. A control group allows for multiple variables to be tested at the same time. 4. A control group is required for the development of a prediction.arrow_forwardWhich of the following is not correctly linked?a. model: a representation of an object used in an experimentb. standard deviation: a form of statistical analysisc. principle: a theory that is not supported by experimental evidenced. data: the results of an experiment or observationarrow_forwardExplain what Avery’s experiment showed in 1944. Briefly describe the idea behind the experimental set up. Mention the step by step findings and the conclusions.arrow_forward
- A properly designed experiment contains the following: positive and negative controls and experimental conditions. positive control and experimental conditions. positive and negative controls control and experimentalarrow_forwardWhat variable is the one that you can manipulate or change? It is sometimes called experimental variablearrow_forwardList the three types of variables that are taken into account when designing an experiment, and briefly define each in your own wrods.arrow_forward
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