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2. Researchers conducting a clinical trial randomly assigned 60 patients with painful kneeosteoarthritis evenly into one of four treatment groups: glucosamine, chondroitin, Celebrex, orplacebo. After the study period, patients were asked if they experienced substantialimprovement in pain and ability to function normally. Thirty-four patients replied that they didhave an improvement, including 8 in the glucosamine group, 9 in the chondroitin group, 11 inthe Celebrex group, and 6 in the placebo group.
a. Create a graph for this data that can be used to compare the success of each of the fourtreatments. (4pt)
b. Conduct the appropriate test to determine if these four treatments were equally successful inimproving knee pain and functionality. (5pt)
c. Calculate the odds ratio of experiencing an improvement for patients in the Celebrex groupcompared those in the placebo group. Interpret what this means in the context of theproblem.
A large playlist consists of songs with times which have mean 2 minutes ten seconds and standard deviation 15 seconds.
Determine the factors in the bag-sealing equipment that might be affecting the ease of opening the bag without tearing the inner liner of the bag.
The personnel department of a large corporation wants to estimate the family dental expenses of its employees to determine the feasibility of providing a dental insurance plan. There are a total of 2,931 employees at the corporation.
According to the 2011 National Occupant Protection Use Survey, only 84% of drivers wear seat belts. Calculate the probabilities that out of 4 randomly selected drivers,
Calculate degrees of freedom and the critical values, or cutoffs, assuming a two-tailed test with a p level of 0.05, for each of the following designs: hours spent studying per week was correlated with credit-hour load for 72 students Twenty-seven co..
Write a DFF model with asynchronous clear, asynchronous set, synchronous clear and synchronous set. Asynchronous controls have priority over synchronous controls. In addition, synchronous clear has higher priority over synchronous set. asynchronous s..
Does the coin flipping process you just completed illustrate the Law of Large Numbers? Why or why not?
Resource-selection analysis compares the distributions of animals relative to the distribution of habitat. If the two don't agree, there is evidence of selection. A survey of 106 moose found that 24 were located in "In burn - interior," 22 in "..
What differentiates the two formulas Σ (x - xbar)^2/n-1 from Σ (x - µ)^2/n, and why the difference?
X=54 n=36 o=5.6 Ho: u=56 Ha: u
A cell phone company offers two plans to its subscribers. At the time new subscribers sign up, they are asked to provide some demographic information. The mean yearly income for a sample of 40 subscribers to Plan A is $59,100 with a standard d..
The company SlimDown makes weight loss products.
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