EBK ESSENTIAL STATISTICS FOR THE BEHAVI
2nd Edition
ISBN: 8220107093466
Author: PRIVITERA
Publisher: SAGE
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Chapter 11, Problem 25CAP
To determine
To complete the F table for this within-subjects design and make a decision to retain or reject the null hypothesis.
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Read this passage carefully, once you have generated a hypothesis, list what the null hypothesis would be, and identify the dependent and independent variables.
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Chapter 11 Solutions
EBK ESSENTIAL STATISTICS FOR THE BEHAVI
Ch. 11 - Prob. 1FPCh. 11 - Prob. 2FPCh. 11 - Prob. 3FPCh. 11 - Prob. 4FPCh. 11 - Prob. 5FPCh. 11 - Prob. 6FPCh. 11 - Prob. 7FPCh. 11 - Prob. 8FPCh. 11 - Prob. 9FPCh. 11 - Prob. 10FP
Ch. 11 - Prob. 11FPCh. 11 - Prob. 12FPCh. 11 - Prob. 13CAPCh. 11 - Prob. 14CAPCh. 11 - Prob. 15CAPCh. 11 - Prob. 16CAPCh. 11 - Prob. 17CAPCh. 11 - Prob. 18CAPCh. 11 - Prob. 19CAPCh. 11 - Prob. 20CAPCh. 11 - Prob. 21CAPCh. 11 - Prob. 22CAPCh. 11 - Prob. 23CAPCh. 11 - Prob. 24CAPCh. 11 - Prob. 25CAPCh. 11 - Prob. 26CAPCh. 11 - Prob. 27PRCh. 11 - Prob. 28PRCh. 11 - Prob. 29PRCh. 11 - Prob. 30PRCh. 11 - Prob. 31PRCh. 11 - Prob. 32PR
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- What is an experiment? Give two examples.arrow_forwardA researcher conducts a study examining the effectiveness of a group exercise program at an assisted living facility for elderly adults. One group of residents is selected to participate in the program, and a second group serves as a control. After 12 weeks, the researcher records a combined score measuring balance and strength for each individual. The data are as follows: Control n = 20 M = 24 SS = 241Exercise n = 30 M = 31 SS = 380 a. Use a two-tailed test with a = 0.1. Conduct the four steps for hypothesis testing and label each step: Step1, Step 2, Step 3, and Step 4.arrow_forwardProvide an example of a between-subjects study. Hypothesis: Independent Variable: Experimental Group Control Grouparrow_forward
- introduces a study investigating whether a brief diet intervention might improve depression symptoms. In the study, 75 college-age students with elevated depression symptoms and relatively poor diet habits were randomly assigned to either a healthy diet group or a control group. Depression levels were measured at the beginning of the experiment and then again three weeks later. The response variable is the reduction in depression level (as measured by the DASS survey) at the end of the three weeks. Larger numbers mean more improvement in depression symptoms. Test whether these experimental results allow us to conclude that, on average, improvement of depression symptoms is higher for those who eat a healthy diet for three weeks than for those who don't. The data is available on StatKey and in DietDepression. Let Group 1 represent those with a healthy diet and Group 2 represent those with no diet change. State the null and alternative hypotheses.arrow_forwardA researcher in the field of educational psychology is interested in the effects an open classroom has on intellectual development. In the open classroom things are much less structured than in a traditional classroom and she believes that this might affect problem-solving skills. An elementary school in her district switched to an open classroom format last year, and she is interested to see how this has impacted on the kids problem-solving skills. She obtains a random sample of 49 fourth grade children and administers a conceptual problem-solving test to them. It is known that fourth graders in traditional classes have an average score of 82 on the test. The children in this study score an average of 86 with a standard deviation of 5. Use this information to answer the following five questions. If the critical value for this example was 2.423, what would you conclude about the study? Select one: a. Retain the null hypothesis and claim that open classrooms affect problem-solving…arrow_forward1. Run an ANOVA 2. Determine the null and alternate hypothesisarrow_forward
- Which technique for gathering data (observational study or experiment) do you think was used in the following study? The Colorado Division of Wildlife caught 41 bighorn sheep on Mt. Evans and gave each one an injection to prevent heartworm. A year later, 38 of these sheep did not have heartworm, while the other three did. A. This is an observational study because a treatment was deliberately imposed on the individuals in order to observe a possible change in the response or variable being measured. B. This is an experiment because a treatment was deliberately imposed on the individuals in order to observe a possible change in the response or variable being measured. C. This is an observational study because observations and measurements of individuals are conducted in a way that doesn't change the response or the variable being measured.arrow_forwardIn a recent Gallup poll, pollsters randomly selected adults and asked them whether they smoke. Among the adults who responded to the survey question, 21% said that they did smoke. Is that value of 21% an example of a statistic or a parameter?arrow_forwardPsychologists are interested to know whether or not Thorazine affects thought disorder symptoms among patients diagnosed with schizophrenia. The null hypothesis is that Thorazine has no effect, and the alternate hypothesis is that there is a difference—that Thorazine does have an effect. The research team has gathered data from two different samples. The first group of participants has not taken the drug, and the second group of participants has been taking Thorazine. In this setup, is this a one-tailed or two-tailed test (and explain why)? Is this an independent samples t-test, repeated measures t-test, or factorial analysis of variance (and explain why)?arrow_forward
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