littlesoutherner12
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Using these data and those from Week 6: Assignment 2, compare the outcomes for CBT and psychodynamic therapy. Note that you may use SPSS to compute any descriptive statistics you need, but you must compute the significance test by hand.
Data:
0.3 1.7 –1.2 2.2 –1.8 0.9 2.6 –3.2 0 –0.5
–4.2 –8.6 0.1 0.6 8.2 0 –2.8 –5.0 0.8 5.0
5.8 0.3 0.6 –5.9 1.2 –7.8 –9.2 1.3 1.9 0.4
Report the appropriate null and research hypotheses and the critical value
(alpha = .05). In addition, provide your statistical conclusion, including calculation of test statistic,
This is what I got for the above question:
Thirty anorexic girls were treated with cognitive behavioral therapy (CBT). They were weighed before and after the treatment. The weight gains, which are positive scores, and weight losses, which are negative scores, are given below. A gain of more than zero pounds would confirm whether the treatment worked. Did the group gain more than zero pounds?
Data:
1.70.7–0.1–0.7–3.514.93.517.1–7.61.6
11.76.11.1–4.020.9–9.12.1–1.41.4–0.3
–3.7–0.82.412.61.93.90.115.4–0.70
Report the appropriate null and research hypotheses and the critical value
(alpha = 0.05). In addition, provide your statistical conclusion, including calculation of test statistic, in one to two sentences.
H0: No weight difference before and after cognitive behavioral therapy
Ha: Weights are greater after cognitive therapy
For the 30 differences
Mean 2.9067
Standard deviation = 7.2023
A paired t-test was performed.
H0: ? = 0
HA: ? ? 0
Sample mean = 2.9067
Standard deviation = 7.2023
Standard error of mean = ? / ? n
Standard error of mean = 7.2023 / ? 30
SE = 7.2023/5.4772
Standard error of mean 1.315
t = (xbar- ? ) / SE
t = (2.9067-0) / 1.315
t = 2.2105
The critical t value is 1.699 with 29 degrees of freedom with alpha=0.05 (one-tailed test)
Since 2.2105 > 1.699, we reject the null hypothesis and conclude that Weights are greater after cognitive therapy. Now if I figured correctly my conclusion would be the group gained more than zero pounds. The CBT didn't work
Ok Now I need to figure out the first part of this question from the second part? Please help me anyone and I will appreciate it and give points
Data:
0.3 1.7 –1.2 2.2 –1.8 0.9 2.6 –3.2 0 –0.5
–4.2 –8.6 0.1 0.6 8.2 0 –2.8 –5.0 0.8 5.0
5.8 0.3 0.6 –5.9 1.2 –7.8 –9.2 1.3 1.9 0.4
Report the appropriate null and research hypotheses and the critical value
(alpha = .05). In addition, provide your statistical conclusion, including calculation of test statistic,
This is what I got for the above question:
Thirty anorexic girls were treated with cognitive behavioral therapy (CBT). They were weighed before and after the treatment. The weight gains, which are positive scores, and weight losses, which are negative scores, are given below. A gain of more than zero pounds would confirm whether the treatment worked. Did the group gain more than zero pounds?
Data:
1.70.7–0.1–0.7–3.514.93.517.1–7.61.6
11.76.11.1–4.020.9–9.12.1–1.41.4–0.3
–3.7–0.82.412.61.93.90.115.4–0.70
Report the appropriate null and research hypotheses and the critical value
(alpha = 0.05). In addition, provide your statistical conclusion, including calculation of test statistic, in one to two sentences.
H0: No weight difference before and after cognitive behavioral therapy
Ha: Weights are greater after cognitive therapy
For the 30 differences
Mean 2.9067
Standard deviation = 7.2023
A paired t-test was performed.
H0: ? = 0
HA: ? ? 0
Sample mean = 2.9067
Standard deviation = 7.2023
Standard error of mean = ? / ? n
Standard error of mean = 7.2023 / ? 30
SE = 7.2023/5.4772
Standard error of mean 1.315
t = (xbar- ? ) / SE
t = (2.9067-0) / 1.315
t = 2.2105
The critical t value is 1.699 with 29 degrees of freedom with alpha=0.05 (one-tailed test)
Since 2.2105 > 1.699, we reject the null hypothesis and conclude that Weights are greater after cognitive therapy. Now if I figured correctly my conclusion would be the group gained more than zero pounds. The CBT didn't work
Ok Now I need to figure out the first part of this question from the second part? Please help me anyone and I will appreciate it and give points