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?
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- Suppose a researcher is investigating the measurement ability of a new device intended to read the freezing point of a chemical compound. The substance used in the investigation has a known freezing point of -24 degrees Celsius. The researcher conducted a series of 10 sample measurements of the freezing point, and the results are represented below. What can we say about the device with regards to its precision, and potential bias? Measurement Freezing Point (degrees Celsius) 1 -26 2 -18 3 -32 4 -31 5 -24 6 -24 7 -24 8 -24 9 -11 10 -37A 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.Dr. Vanier’s daughter Lexy thinks that the snacking habit alone does not cause weight loss. She believes that one needs to combine no snacking with the elimination of carbohydrates in their meals. Please explain how Dr. Vanier may test this hypothesis by describing the research design. Specify the independent variable(s), dependent variable(s), and the name of the design. Finally, describe what she needs to find (i.e., what type of effect and what it looks like) in the experiment to support her hypothesis. ( name the IV(s); 1name the DV(s); name the design; then explain the effect that will support the hypothesis)
- Which of these statements are true about predictions and hypotheses? (4 are true) □ If the results of the experiment are NOT consistent with a given prediction then that hypothesis is false. O Hypotheses and predotions are the same as theories. A predictions is a possible explanations to explain the initial observation. Predictions and hypotheses are the same thing. Predictions are usually written as if/then statements. "If I do this, then that will happen." O The prediction step comes before the hypothesis. Hypotheses are usually written as if/then statements. "If I do this, then that will happen." A hypothesis is a possible explanations to explain the initial observation. O The prediction step comes after the hypothesis.what is the Expectation and outcome of results, Logical interpretation of the dataand any errors?Please do not give solution in image format thanku A procedure for ensuring that ________ is experimental design. Question 1 options: A) the change in the dependent variable may be solely attributed to the change in the independent variable B) any and all effects on all experimental values are measured C) the change in the dependent variable may be solely attributed to the change in the extraneous variable D) the change in the independent variable may be solely attributed to the change in the complex variable
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- What variable is the one that you can manipulate or change? It is sometimes called experimental variableWhat preliminary conclusions can you draw from the results of the experiment and what is the independent and dependent variable ?I am trying to figure out these four things. What is the independent variable, what is the dependent variable, what are the controlled variables and why this experiment doesn’t use a control.