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- A 2x2 experiment looks at how obesity and hunger affect the amount of food people eat. The results are shown below. n=10 participants per condition. Additional info if needed: N=40, G=120, ∑?2=640∑x2=640 please conduct a twoway ANOVA and draw conclusions about the main effects and interaction of obesity and hunger on food intake. Obesity (Factor B) B1 (Obese) B2 (normal weight) Hunger A1 (not hungry) M=4 SS=50 M=1 SS=30 Factor A A2 (hungry) M=5 SS=60 M=2 SS=40A significant interaction was found between depression, social support and GPA. These results should be considered with caution and further research should be done to better understand the relationships between these variables. Furthermore, those working with college students should consider the overall well-being of the student, as it is possible that their academic performance may not be affected by anxiety and/or depression. IS THIS A TYPE 1 ERROR OR A TYPE 2 ERROR IN RESEARCH?Think of a research scenario for which either 1-way or 2-way ANOVA would be needed to analyze the results.
- You are a medical researcher that wants to determine if your new drug can lower people's blood pressure. You recruit 60 participants with high blood pressure to be part of your study. You randomly assign participants to one of three groups to receive either 10 mg of your drug, 5 mg, or 0 mg (given as a placebo control). After 2 weeks, participants' blood pressure is measured and you compare among the 3 groups. Which statistical test would be best to determine if there is a significant difference in blood pressure among the three groups?A research team is interested in the effect of the Parent Child Interaction Therapy (PCIT) in reducing children’s disruptive behaviors for children with disruptive behavior disorders (DBD). The research team recruited 12 families with child with DBD and interviewed the parents about the number of the disruptive behaviors the child has at home. After 3 weeks’ therapy, the research interviewed again about child’s disruptive behaviors. The disruptive before and after the therapy is list below. Test the researcher’s hypothesis at a 0.05 significant level. List 4 steps.As the manager of a fashion brand, you have recently run a large-scale campaign to draw attention to your company's CSR activities and thus improve the brand's image. In order to evaluate the efficiency of the campaign, you conducted a survey at major fashion stores to measure the attitudes towards. your brand at two points of time: before the campaign started and after the campaign finished. By summing up respondents' answers to 3 questions (each measuring a particular aspect of attitude on a 1-5 scale), a single overall measure of attitude is obtained for each participant. This measure can therefore range from 3 to 15, with a score of 3 representing and extremely negative attitude and a score of 15 representing an extremely positive attitude. To check whether male and female customers have different attitudes towards you company, as well as to test whether the campaign may have affected males and females differently, you ask the respondents to report their gender. You analyse the…
- A study is testing the effectiveness of a new allergy medication. Sixty people who reported they have allergies volunteered to be part of the study and were randomly assigned to one of two groups, as shown in the design web. 30 Receive Medication Randomly Assigned Compare Level of Allerg Symptoms after Severa Weeks 60 Subjects 30 Receive Placebo Which of the following accurately describes the benefit of comparison in the experiment shown in the design web? The level of allergic symptoms in both groups can be compared to see if the new medication had a significant effect. The overall level of allergic symptoms can be used to determine if the new allergy medication had a significant effect. The level of allergic symptoms in the group who received the medication can be used to determine if the medication had a significant effect. The level of allergic symptoms in both groups cannot be compared to determine if the medication had a significant effect because one group only received a…An academic medical center surveyed all of its patients in 2002 to assess their satisfaction withmedical care. Satisfaction was measured on a scale of 0 to 100, with higher scores indicative ofmore satisfaction. The mean satisfaction score in 2002 was 84.5. Several quality-improvementinitiatives were implemented in 2003 and the medical center is wondering whether theinitiatives increased patient satisfaction. A random sample of 125 patients seeking medical carein 2003 was surveyed using the same satisfaction measure. Their mean satisfaction score was89.2 with a standard deviation of 17.4. Is there evidence of a significant improvement insatisfaction? Run the appropriate test at the 1% level of significancProfessor Chase from the University of Kansas has been working on a new cholesterol medication that is being called CholestoCleaner. The university is now conducting studies to determine if there is a possible side effect of sore joints. Placebo (Population Rate) To help determine the usual rate of sore joints, the research team gave a placebo (sugar pill) to 2017 subjects. Of those 2017 subjects, 4 of them developed sore joints. CholestoCleaner Trial The CholestoCleaner drug was given to 2622 subjects. Of those 2622 subjects, 19 of them developed sore joints. Preliminary Math If we consider the general population of people that don't use CholestoCleaner, what is the probability that they will develop sore joints? (Enter your answer as a fraction.) If you had a sample size of 2622 that did NOT use CholestoCleaner, how many would expect to develop sore joints? When 2622 subjects DID use the drug, there were 19 subjects that developed sore joints. Does it seem as though sore joints…
- What source of variation is found in an ANOVA summary table for a within subjects design that is not in an ANOVA summary table for a between subjects design. What happens to this source of variation in a between-subjects design?Mr. Saif has conducted a research study to know the attitude of graduate students towards entrepreneurship business. In this regard, he has collected the data from the Sultan Qaboos University, Muscat and University of Technology and Applied Sciences, Muscat using a structured questionnaire. The feedback of 400 students has been collected from these universities. For the data analysis, the researcher has used exploratory factor analysis and regression to evaluate the factors influencing the attitude of students towards entrepreneurship business. Question: Evaluate the methodology approach used for this study by discussing its features.Numerous studies have shown that a high fat diet can have a negative effect on a child's health. A new study' suggests that a high fat diet early in life might also have a significant effect on memory and spatial ability. In the double-blind study, young rats were randomly assigned to either a high-fat diet group or to a control group. After 12 weeks on the diets, the rats were given tests of their spatial memory. The article states that "spatial memory was significantly impaired" for the high-fat diet rats, and also tells us that "there were no significant differences in amount of time exploring objects" between the two groups. The p-values for the two tests are 0.0001 and O.7. 'Underwood EL and Thompson LT, "A high-fat diet causes impairment in hippocampal memory and sex-dependent alterations in peripheral metabolism," Neural Plasticity, August 2015. (a) Which p-value goes with the test of spatial memory? 0.0001 0.7