BELK SCIENCE F/LIFE-MASTRG. BIOL.AC+EBK
6th Edition
ISBN: 9781323907634
Author: BELK
Publisher: PEARSON
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Chapter 1, Problem 7LTB
Summary Introduction
Introduction:
A scientific control experiment can be defined as an experiment or observation that is designed to lessen the effects of variables other than the self-governing variable. This raises the reliability of the results, usually through an evaluation between the control and other measurements.
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A useful hypothesis typically accomplishes these two things:
Group of answer choices
it is falsifiable and clear
it clearly establishes a null hypothesis and it generates a testable prediction
it can be easily disproved and will be considered a theory if not disproved
it frames an experiment that can shed light on the observation and guides design of the experiment
Design 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.
The 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 void
Chapter 1 Solutions
BELK SCIENCE F/LIFE-MASTRG. BIOL.AC+EBK
Ch. 1 - Add labels to the figure that follows, which...Ch. 1 - Which of the following is an example of inductive...Ch. 1 - A scientific hypothesis is ___________. an...Ch. 1 - How is a scientific theory different from a...Ch. 1 - Prob. 5LTBCh. 1 - If I perform a hypothesis test in which I...Ch. 1 - Prob. 7LTBCh. 1 - Prob. 8LTBCh. 1 - A relationship between two factors, for instance,...Ch. 1 - A primary source of scientific results is...
Ch. 1 - Prob. 11LTBCh. 1 - What features of the story on milk chocolate and...Ch. 1 - Prob. 1AAATBCh. 1 - In an experiment examining vitamin C as a cold...Ch. 1 - Prob. 3AAATBCh. 1 - Prob. 1GFOCh. 1 - Much of the research on common cold prevention and...Ch. 1 - The science that you learned in this chapter has...
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- What measures an experiments ability for its results to be due to the treatment that was applied? intervening validily central limiting theorem internal vailidityarrow_forwardA 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_forwardThe '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_forward
- According to this experiment, summarize it and be sure to address the following questions: What hypothesis was being tested? How did you test your hypothesis? What independent and dependent variables were being investigated? What controls did you use? What were possible sources of error in your experiment? Please explain how the experiment you conducted supported or failed to support the original hypothesis.arrow_forwardThe variable is a part of the experiment that varies or changes. True Falsearrow_forward(1 question with multiple steps please answer) Identify the component characteristics of a scientific investigation Suggest alternative hypotheses that could be tested by the design Evaluate the validity of conclusions based on the given results Suggest ways to improve the experimental design Define and recognize examples of the experimental group, experimental variable, control group, control variable, independent variable, and dependent variable, and dataarrow_forward
- The thing that scientist changes in an experiment Variablearrow_forwardWhen presenting a slide that shows experimental data you should explain the experiment that gave that data you should discuss the hypothesis being tested O you should discuss whether or not the results support or refute the hypothesis all of the abovearrow_forward___________ __________ is the precise repetition of an experiment or expansion of observed data to provide verification; the procedure by which hypotheses and theories are verified, modified, or discarded. Group of answer choices A-empirical hypothesizing B-pscientific testing C-theoretical investigating D-qualitative observing E-quantitative reasoningarrow_forward
- an independent variable is the variable measured in an experiment. True or Falsearrow_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_forwardWhich of the following actions would best enable you to demonstrate that the results of an investigation are repeatable? * Another researcher repeating the investigation and getting the same pattern in the results. Repeating the investigation, but changing the measuring procedure and still finding the same pattern in the results. Repeating the same investigation and finding the same pattern in the results. Repeating the investigation, but changing the hypothesis and still finding the same pattern in the results. Repeating the investigation and getting the same pattern in the results after three years.arrow_forward
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