Question
In: Statistics and Probability
8) USE dependent test formula- Correctional services were interested in evaluating a cognitive-behavioural based intervention designed...
8) USE dependent test formula-
Correctional services were interested in evaluating a cognitive-behavioural based intervention designed to reduce violence and offending. A group of researchers assigned nine offenders on parole into a control group for one year and recorded the number of violent incidents perpetrated by the offenders. Then, these offenders were given the intervention for one year and the number of violent incidents perpetrated by the offenders was recorded following the treatment. The researchers are interested in testing whether the treatment had any effect on the outcome. Control 4 7 4 6 8 5 9 7 4 Treatment 3 5 2 7 5 5 6 4 2
a) What is the appropriate model of the population(s)?
b) What are the appropriate hypotheses for this analysis?
c) What is/are the critical value(s) for this test using an alpha of 0.05?
d) What is the observed value of the appropriate test statistic?
e) What is your decision regarding the stated hypotheses?
f) What is the estimated effect size using Cohen’s d?
g) What is the 95% confidence interval around the difference population mean?
h) Did the intervention have an effect on the outcome?
Solutions
orchestra answered 1 year agoRelated Solutions
8) Correctional services were interested in evaluating a cognitive-behavioural based intervention designed to reduce violence and...
8) Correctional services were interested in evaluating a
cognitive-behavioural based intervention designed to reduce
violence and offending. A group of researchers assigned nine
offenders on parole into a control group for one year and recorded
the number of violent incidents perpetrated by the offenders. Then,
these offenders were given the intervention for one year and the
number of violent incidents perpetrated by the offenders was
recorded following the treatment. The researchers are interested in
testing whether the treatment had any...
8) Correctional services were interested in evaluating a cognitive-behavioural based intervention designed to reduce violence and...
8) Correctional services were interested in evaluating a
cognitive-behavioural based intervention designed to reduce
violence and offending. A group of researchers assigned nine
offenders on parole into a control group for one year and recorded
the number of violent incidents perpetrated by the offenders. Then,
these offenders were given the intervention for one year and the
number of violent incidents perpetrated by the offenders was
recorded following the treatment. The researchers are interested in
testing whether the treatment had any...
7) Correctional services were interested in evaluating a cognitive-behavioural based intervention designed to reduce violence and...
7) Correctional services were interested in evaluating a
cognitive-behavioural based intervention designed to reduce
violence and offending. A group of researchers randomly assigned 18
offenders into either a control group or a treatment group.
Offenders in the treatment group received the intervention for one
year prior to their release while those in the control group
received no intervention prior to their release. The researchers
then gathered data on the number of violent incidents perpetrated
by offenders over the five years...
Correctional services were interested in evaluating a cognitive-behavioural based intervention designed to reduce violence and offending....
Correctional services were interested in evaluating a
cognitive-behavioural based intervention designed to reduce
violence and offending. A group of researchers randomly assigned 18
offenders into either a control group or a treatment group.
Offenders in the treatment group received the intervention for one
year prior to their release while those in the control group
received no intervention prior to their release. The researchers
then gathered data on the number of violent incidents perpetrated
by offenders over the five years after...
Correctional services were interested in evaluating a cognitive-behavioural based intervention designed to reduce violence and offending....
Correctional services were interested in evaluating a
cognitive-behavioural based intervention designed to reduce
violence and offending. A group of researchers assigned nine
offenders on parole into a control group for one year and recorded
the number of violent incidents perpetrated by the offenders. Then,
these offenders were given the intervention for one year and the
number of violent incidents perpetrated by the offenders was
recorded following the treatment. The researchers are interested in
testing whether the treatment had any effect...
10) Correctional services were interested in further evaluating a cognitive-behavioural based intervention. The same group of...
10) Correctional services were interested in further evaluating
a cognitive-behavioural based intervention. The same group of
researchers randomly assigned 15 offenders into a low intensity,
medium intensity, or high intensity intervention program. The
researchers then gathered data on the number of violent incidents
perpetrated by offenders over the five years after their release.
They were interested in whether the intensity of the intervention
program had any effect on the outcome.
Low :9 8 6 8 7
Medium:8 7 5 6...
10) Correctional services were interested in further evaluating a cognitive-behavioural based intervention. The same group of...
10) Correctional services were interested in further evaluating
a cognitive-behavioural based intervention. The same group of
researchers randomly assigned 15 offenders into a low intensity,
medium intensity, or high intensity intervention program. The
researchers then gathered data on the number of violent incidents
perpetrated by offenders over the five years after their release.
They were interested in whether the intensity of the intervention
program had any effect on the outcome.
Low : 9 8 6 8 7
Medium: 8 7...
Correctional services were interested in further evaluating a cognitive-behavioural based intervention. The same group of researchers...
Correctional services were interested in further evaluating a
cognitive-behavioural based intervention. The same group of
researchers randomly assigned 15 offenders into a low intensity,
medium intensity, or high intensity intervention program. The
researchers then gathered data on the number of violent incidents
perpetrated by offenders over the five years after their release.
They were interested in whether the intensity of the intervention
program had any effect on the outcome.
Low:9 8 5 8 7 Medium: 6 6 5 7 8...
Dependent Sample T-Test Researchers were interested in studying whether seniors who participated in Silver Sneakers had...
Dependent Sample T-Test
Researchers were interested in studying whether seniors who
participated in Silver Sneakers had a significant weight loss over
a 10 week period. Given the above information, answer the questions
below (assume a level of significance of .05).
State the null and alternate hypotheses.
What is the independent variable?
What is the dependent variable?
Complete the table below:
Paired Samples
Statistics
Mean
N
Std. Deviation
Std. Error Mean
Pair 1
preweight Weight
before the diet (kg)
72.53
78...
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