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The efficacy of a new addiction medication was evaluated in a randomized, placebo-controlled, doubleblind study. The medication in question, Antaquil, is intended to moderate the symptoms of alcohol withdrawal and craving with minimum side effects. Over the course of three weeks, a sample of 36 individuals who were recovering from alcohol addiction were randomly assigned to two groups: one administered the medication and one administered a placebo. At the end of the designated period, participants were administered the Obsessive Compulsive Drinking Scale (OCDS), an instrument that provides a global measure of thoughts about alcohol during nondrinking periods. Scores can range from 0 to 40 with higher scores signaling higher levels of rumination about alcohol. Prior to participation participants were all informed of the nature of Antaquil and were told they could leave the study at any time. Outcome data on the OCDS are shown below
Treatment Gp Placebo Gp
40 37
35 35
27 34
18 24
30 29
28 14
11 23
23 25
30 32
13 37
16 30
17 30
26 29
22 22
19 23
17 31
29 28
10 20
What question can be answered by the data above?
1. What is an example of a particular object that can be both discrete and continuous, although at different times?
explain how and why one is able to first distinguish a triploblastic embryo from a diploblastic
1. Let X and Y be independent random variables from an exponential distribution with common parameter θ = 1. Show that X/Y has an F -distribution. What is the number for degrees of freedom?
A researcher is investigating the effectiveness of a new study-skills training program for elementary school children. A sample of n= 25 third grade children and each child is given a standardized achievement test at the end of the year.
this exercise ilustrate that poor quality can affect schedule and cost. a manufacturing process has 100 customer order
Supposing that the entire $10,000 can be spent on tires (ignoring other costs), and that the true fraction that will fail is approximately .05, can NHTSA attain its goal while staying within the budget? Describe.
Among students who usually get A's and B's in school, what percentage never or rarely uses sunscreen when going out in the sun for more than one hour? Explain whether this value is a row percentage or a column percentage.
Sample data are reported for 50 employees of small companies, 75 employees of medium companies, and 100 employees of large companies.
Assuming that the life of bulbs follow Normal distribution, what is the probability that a randomly selected bulb will: Fail within 1200 hours? Survive between 1350 and 1650 hours?
suppose that your wireless mouse has a single battery and that you buy batteries that have a mean lifetime of 6 weeks
Explain what populations the samples should be drawn from and what variable or variables would be measured for each individual in the sample(s).
you wish to conduct an anova one wayomnibus in your capstone project. in order to insure you have enough power to
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