Participants is a study on learning were randomly assigned into one of two treatment conditions. Is...
Participants is a study on learning were randomly assigned into one of two treatment conditions. Is there a difference between the average exam grade for students who use note cards when they study , compared to those who only read their assignment? ( Alpha = 0.5)
Note cards 7, 3, 4, 4 ,6, 8
Readers 1 ,4 ,2, 2, 3 ,1
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Participants is a study on learning were randomly assigned into
one of two treatment conditions. Is...
In this study, participants were randomly assigned to one of two situations – “stress” or “no...
In this study, participants were randomly assigned to one of two situations – “stress” or “no stress”. They were then put into their assigned fictitious situation and after an hour, were asked to provide an appetite score (Likert-rating). The following data are appetite scores (with higher indicating more of an appetite / i.e. the person is hungry) from 24 participants. Assume data meets all assumptions for a parametric test. Using the information provided, create an SPSS data file and conduct...
1. A research study randomly assigned participants into two groups. One group was given Vitamin E...
1. A research study randomly assigned participants into two groups. One group was given Vitamin E to take daily. The other group received only a placebo pill. The research study followed the participants for eight years. After the eight years, the proportion of each group that developed a particular type of cancer was compared. What is the primary reason that the study used random assignment? a. To ensure that the groups are similar in all respects except for the level...
In this study, participants were randomly assigned to one of two groups – to watch either...
In this study, participants were randomly assigned to one of two groups – to watch either a NEUTRAL or EMOTIONAL movie clip. After watching for an hour, participants were asked to rate work place satisfaction using an inventory that ranges from 0 – 10 (with higher indicating higher satisfaction). Assume data meets all assumptions for a parametric test. Using the information provided, create an SPSS data file and conduct the appropriate statistical test to determine whether there is a statistically...
I The following data were obtained from a study comparing 3 treatment conditions, with 5 participants...
I The following data were obtained from a study comparing 3 treatment conditions, with 5 participants in each treatment condition. Assuming the statistic reported below is significant at .05 conduct Tukey post hoc tests for all pairwise comparisons. Treatment 1 Treatment 2 Treatment 3 Means MS SS 70 F=10.51 Source Between Treatments Within Treatments Total 3.33 110 :
n a study conducted by some Statistics? students, 57 people were randomly assigned to listen to...
n a study conducted by some Statistics? students, 57 people were randomly assigned to listen to rap? music, music by? Mozart, or no music while attempting to memorize objects pictured on a page. They were then asked to list all the objects they could remember. The summary statistics for each group are shown in the table. Complete parts a and b. Rap Mozart No Music Count 32 15 10 Mean 12.62 8.91 14.88 SD 3.52 2.91 4.23 a) Does it...
Children (aged 8 – 14 years) with anxiety disorders were randomly assigned to cognitivebehavioral individual treatment,...
Children (aged 8 – 14 years) with anxiety disorders were randomly assigned to cognitivebehavioral individual treatment, cognitive-behavioral group treatment, or a wait-list control. Treatment outcome was evaluated using diagnostic status, child self- reports, and parent- and teacher-reports. Analyses of diagnostic status revealed that significantly more treated children (73% individual, 50% group) than wait-list children (8%) did not meet diagnostic criteria for their primary anxiety disorder at post-treatment. Other dependent measures demonstrated the superiority of both treatment conditions compared to the...
Question 1 FLAG QUESTION In a study to investigate whether pet therapy improves exam scores, students...
Question 1 FLAG QUESTION In a study to investigate whether pet therapy improves exam scores, students who interacted with a therapy pet scored higher than students who did not. Which of the following is closest to describing what 'internal validity' refers to for this study? Answers A-D A the confidence that improved exam scores were attributed to the pet therapy, B the confidence that results of the study can be generalized to other students taking an exam. C experts having...
A study described an experiment that randomly assigned participants to receive $3 to spend on themselves...
A study described an experiment that randomly assigned participants to receive $3 to spend on themselves (self-interest), or to receive $3 to donate to a nonprofit charity (imposed charity), or to receive $3 that they could either spend on themselves or donate to charity (choice). After receiving or donating the money, the participants rated how happy they were with this experience, on a seven-point scale (with 1 = not at all, 7 = an extreme amount). The authors reported a...
Thirty-two patients suffering from depression were randomly assigned to one of four drug treatment groups: 0...
Thirty-two patients suffering from depression were randomly assigned to one of four drug treatment groups: 0 mg (placebo), 1 mg, 2 mg, or 3 mg of antidepressant drug. The table below summarizes the patients' improvement scores in personal adjustment following one month of drug therapy. Treatment | 1 (0 mg) 2 (1 mg) 3 (2 mg) 4 (3 mg) 8 8 43 57 102 92 means 5.38 7.13 12.75 11.50 n 8 8 sum MS IF Source SS df Between...
Thirty-two patients suffering from depression were randomly assigned to one of four drug treatment groups: 0...
Thirty-two patients suffering from depression were randomly assigned to one of four drug treatment groups: 0 mg (placebo), 1 mg, 2 mg, or 3 mg of antidepressant drug. The table below summarizes the patients' improvement scores in personal adjustment following one month of drug therapy. Treatment 1 (0 mg) 2 (1 mg) 3 (2 mg) 4 (3 mg) In 18 8 8 8 sum 43 57 102 92 means 5.38 7.13 12.75 11.50 Source SS df MSF Between (A) (2)...
1. A research study randomly assigned participants into two groups. One group was given Vitamin E to take daily. The other group received only a placebo pill. The research study followed the participants for eight years. After the eight years, the proportion of each group that developed a particular type of cancer was compared. What is the primary reason that the study used random assignment? a. To ensure that the groups are similar in all respects except for the level...
I The following data were obtained from a study comparing 3 treatment conditions, with 5 participants in each treatment condition. Assuming the statistic reported below is significant at .05 conduct Tukey post hoc tests for all pairwise comparisons. Treatment 1 Treatment 2 Treatment 3 Means MS SS 70 F=10.51 Source Between Treatments Within Treatments Total 3.33 110 :
Question 1 FLAG QUESTION In a study to investigate whether pet therapy improves exam scores, students who interacted with a therapy pet scored higher than students who did not. Which of the following is closest to describing what 'internal validity' refers to for this study? Answers A-D A the confidence that improved exam scores were attributed to the pet therapy, B the confidence that results of the study can be generalized to other students taking an exam. C experts having...
Thirty-two patients suffering from depression were randomly assigned to one of four drug treatment groups: 0 mg (placebo), 1 mg, 2 mg, or 3 mg of antidepressant drug. The table below summarizes the patients' improvement scores in personal adjustment following one month of drug therapy. Treatment | 1 (0 mg) 2 (1 mg) 3 (2 mg) 4 (3 mg) 8 8 43 57 102 92 means 5.38 7.13 12.75 11.50 n 8 8 sum MS IF Source SS df Between...
Thirty-two patients suffering from depression were randomly assigned to one of four drug treatment groups: 0 mg (placebo), 1 mg, 2 mg, or 3 mg of antidepressant drug. The table below summarizes the patients' improvement scores in personal adjustment following one month of drug therapy. Treatment 1 (0 mg) 2 (1 mg) 3 (2 mg) 4 (3 mg) In 18 8 8 8 sum 43 57 102 92 means 5.38 7.13 12.75 11.50 Source SS df MSF Between (A) (2)...
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