Question
In: Statistics and Probability
Callahan (2009) demonstrated that Tai Chi can significantly reduce symptoms for individuals with arthritis. Participants were...
Callahan (2009) demonstrated that Tai Chi can significantly reduce symptoms for individuals with arthritis. Participants were 18 years old or older with doctor-diagnosed arthritis. Self-reports of pain and stiffness were measured at the beginning of an 8-week Tai Chi course and again at the end. Suppose that the data produced an average decrease in pain and stiffness of MD = 8.5 points with a standard deviation of 21.5 for a sample of n = 40 participants. **PLEASE SHOW HOW TO DO ALL WORK WITHOUT A CALCULATOR/USING T-DIST FUNCTION***
a. Use a two-tailed test with α = .05 to determine whether the Tai Chi had a significant effect on pain and stiffness.
b. Compute Cohen’s d to measure the size of the treatment effect.
Solutions
orchestra answered 2 years agoRelated Solutions
Callahan (2009) demonstrated that Tai Chi can significantly reduce symptoms for individuals with arthritis. Participants were...
Callahan (2009) demonstrated that Tai Chi can significantly
reduce symptoms for individuals with arthritis. Participants were
18 years old or older with doctor-diagnosed arthritis. Self-reports
of pain and stiffness were measured at the beginning of an 8-week
Tai Chi course and again at the end. Supposed that the data
produced an average decrease in pain and stiffness of MD=7.5 points
with a standard deviation of 20.5 for a sample of n=40
participants
a.) Use a two-tailed test with alpha =.05...
If you were counseling individuals with chronic illnesses, such as diabetes, cardiovascular disease, and arthritis, what...
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The following data are the resting pulse rates for 21 randomly selected individuals who were participants...
The following data are the resting pulse rates for 21 randomly
selected individuals who were participants at a 10K race.
49 55 48 50 55 70 59 59 55 49 58 55 55 57 69 55 45 62 60 68
59
(a) Construct a stem-and-leaf plot of the pulse rates.
(b) Construct a boxplot of the pulse rates. Label all
points.
(c) Describe the shape of the distribution of the pulse
rates.
(d) The boxplot provides information about the distribution...
Researchers (Hebl et al.,2009) were interested in whether European American (EA) individuals would perceive overweight EAs...
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positively they felt about the person (e.g., attractive,
intelligent, successful, happy, etc.).
EA group (n = 45): mean
rating =...
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