Is there evidence of a difference in the variability of the computer anxiety experienced by males and females?
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Is there evidence of a difference in the variability of the computer anxiety experienced by males and females?
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- A research team is interested in the effect of 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 a child with DBD and interviewed the parents about the number of disruptive behaviors the child has at home. After three weeks' therapy, the research interviewed again about the child's disruptive behaviors. What is the research question? What is/are the variable(s)? Are they categorical or continual variables? What statistical test can be used to answer the research question?In general, if two variables are strongly associated, does it follow there must be a cause and effect relationship between them? Explainboth questions (a) and (b) pleasee Twelve inmates in a particular prison took part in an anger management class. Before it began, the median score on an anger control assessment of the group was 42 (out of a maximum of 60). After the six month class, the participants scores on the same assessment were 35, 41, 40, 44, 57, 36, 39, 47, 58, 39, 42, 39. (a) - the course was designed to lower anger control scores. Perform a sign test on whether the course was successful using a = 0.05 (b) Construct a boxplot of the data and explain briefly why a sign test is appropriate to use in this case
- Are nursing salaries in Tampa, Florida, lower than those in Dallas, Texas? Salary data show staff nurses in Tampa earn less than staff nurses in Dallas (The Tampa Tribune, January 15, 2007). Suppose that in a follow-up study of 40 staff nurses in Tampa and 50 staff nurses in Dallas you obtain the following results. Tampa n1 = 40 X1 = $56,100 S1 = $6000 Dallas n2 = 50 X2 = $59,400 S2 = $7000 Complete the confidence interval of the data setBased on a graph below which of the following statement describes the best types of associations between Factors A, C, and D and the Disease: (choose one best answer) Factor Factor C Disease Factor A O Factor A is sufficient but not necessary, while Factors C and D and neither sufficient not necessary. O Factors A, C and D are neither sufficient nor necessary. O Factor A is necessary but not sufficient, while Factors C and D are necessary but not sufficient. O Factor A is sufficient but not necessary, while Factors C and D are neither sufficient not necessary.A two-factor study investigates the effects of self-esteem (low vs. high) and gender (males vs. females) on anxiety scores. The following data represents the means for each treatment condition. Low self-esteem High self-esteem Male 5 11 Female 10 3 The data shows that there is a self-esteem by gender interaction. Explain the self-esteem by gender interaction (include individual means in your explanation)
- A research study reports the results of a correlational study that shows a negative relationship between parent stress at work and the mental health of their children. What possible findings would show this? A. Parents who report higher stress at work tend to have children with higher mental well-being scores B. Parents to report higher stressed out work tend to have children with higher anxiety scores C. Parents who report lower stress at work tend to have children with lower anxiety scores D. Parents who report lower stress at work tend to have children with higher mental well-being scoresRecent research is exploring ways to use virtual reality (VR) to help people in a variety of ways. In one published study, researchers examined whether VR could help people get over the discomfort they feel after riding rollercoasters. Participants whose lifelong dreams were to ride rollercoasters without feeling noxious were recruited to participate in the research. Some participants were randomly assigned into the control group, where no VR treatment was provided before riding the rollercoaster (instead, they received an encouraging pep talk from the experimenter). The rest of the participants were put in the treatment group, where they first put on a VR headset and experienced a virtual rollercoaster before riding the real thing. After both groups of participants completed the rollercoaster ride, both survey and physiological measures were collected. The subjective and objective measures for each participant were summed to create a discomfort index, which ranges from scores of 1…A researcher gathered a sample of participants who volunteered for a studying of phobias. She measured anxiety level of participants as they viewed photos of spiders and again when they viewed puppies. Which statistical test is appropriate for this study and why?
- If observations are independent, that means that one observation has influenced another. True FalseBorderline personality disorder (BPD) is a psychological illness marked by an ongoing pattern of varying moods, self-image, and behavior. A psychologist wants to evaluate the effectiveness of dialectical behavior therapy (DBT) on BPD in a two month study. The psychologist randomly selected 500 people who have BPD to participate in a study. The 500 participants were divided into two groups based on gender. The first group, contained 344 females, they were given medication along with DBT therapy. The second group were comprised of 156 males, they received medication alone. At the end of the two month study, the psychologist administered a standard test to evaluate the symptoms of BPD. It was found that the group that received the DBT therapy along with the medication had about the same level of improvement in symptoms as the group that received the medication alone. The psychologist concluded that there is no evidence that DBT therapy is effective at improving the symptoms of Borderline…Your state is going to vote on becoming a "right to work" state in the next, and you wonder if there is there a relationship between salary levels and unionization. You find data on salary from the U.S. Census, which is split into three groups: Low; Moderate/About Average, and; High. To see if salary, measured in this way, is associated with unionization you find a variable in the same dataset called "UNION", which has two categories: the respondent has a unionized job and the respondent does not have a unionized job. Because you want to know if you should favor or oppose becoming a "right to work" state, you test these two variables to see if there is an association between salary level and unionized labor. What type of hypothesis test is most appropriate?
