6. The following questions relate to hypothesis testing from a new study. A. Based on excellent...
6. The following questions relate to hypothesis testing from a new study.
A. Based on excellent research above, the research team then receives funding to conduct a small pilot study examining the effects of a new diversion program operated by a local police agency. The program diverts individuals using drugs to treatment programs rather than arresting and prosecuting them for non-violent drug crimes. The researchers collect information about 20 individuals that followed arrest-prosecution path (sample 1) and 20 individuals that were diverted to drug treatment programs (sample 2) using a random sample methodology and random assignment. They present the mean number of times an individual used illegal drugs for each group (along with the group standard deviation and sample size). Does the frequency in drug use differ significantly at the .01 level of significance between arrest-prosecution group and the treatment group?
Follow the hypothesis testing framework and show all steps and work. Set alpha = .01.
Sample 1 - Arrest-Prosecution sample mean= 22.2, s= 18, n=20
Sample 2 - Treatment Diversion sample mean = 11.2, s=16, N=20
Note to compute the t-obtained: (“standard error of the difference between means”)
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Consider the research design described above. The results from
the recycling study are as follows:
Treatment Group mean: 5.00
Control Group mean: 4.00
Sample size: 50
Standard Error of the differences between the means: 0.65
Compute the lower bound of the confidence
interval. (See the formula above.) Make sure to use the treatment
group as "Mean 1" in the formula. (Your answer must be expressed as
a decimal out to 2 places, e.g., .20)
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Should you response to...
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