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jasmine nolan

jasmine n.

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ANSWERED

Thuc Nguyen verified

Numerade educator

A researcher conducts an independent-measures study examining the effectiveness of a mobile app at increasing physical activity among adults. One group of adults is selected to use the app, and a second group serves as a control. After 6 weeks, the researcher records a combined score measuring balance and strength for each individual. The data are as follows: Control Mobile App n = 10 n = 10 M = 85 M = 93 SS = 160.0 SS = 200.0 1) Does the mobile app have a significant effect? Use a two-tailed test with an alpha level of .05. Be sure to state your null hypothesis, and make an overall conclusion including an APA style statement. 2) If necessary, compute Cohen’s d to measure the size of the treatment effect.

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Ameer Said verified

Numerade educator

The following data were collected from a repeated-measures study. Perform an ANOVA. Use a .05 alpha level. (10 POINTS) Treatment A B _____________ G = 36 2 6 2 6 ?X2 = 192 4 4 4 8 ______________ T = 12 T = 24 SS = 4 SS = 8 1) State the null hypothesis. 2) Calculate necessary statistics (USE AN ANOVA even though K=2, and ??= .05). 3) Make a decision about your null hypothesis and explain what that decision means. 4) Make a conclusion about your IV and DV that includes an APA format summary of your statistical analysis.

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INSTANT ANSWER

A research study was conducted to examine the clinical efficacy of a new anti-anxiety medication. Anxious patients were randomly assigned to one of three groups: a placebo group (no drug), a group that received a low dose of the drug, and a group that received a moderate dose of the drug. After four weeks of treatment, the patients completed the Smith Anxiety Inventory. The data are presented below. 1) Do these data indicate any significant differences among the three treatments? Test with ??= .05. 2) Be sure to state your null hypothesis, and make an overall conclusion including an APA style statement. 3) Explain what you might do next and why. (7 POINTS) No Drug Low Dose Moderate Dose 17 16 29 14 24 21 G = 315 22 20 27 ?X2 = 6853 19 21 23 18 19 25 T = 90 T = 100 T = 125 SS = 34 SS = 34 SS = 40

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