Explain reduces rate of post-surgical staph infection

Assignment Help Basic Statistics

Reference no: EM13114685

The researchers recruited 917 patients who had tested positive for Staphylococcus aureus and randomly assigned them to receive a nasal ointment that contained either a staph-killing solution or a placebo. Post-surgery infections with S. Aureus were then recorded. In the treatment, group, 17 of 504 patients developed a staph infection, compared with 32 of 413 patients in the placebo group.

Is there good evidence that treatment of staph-positive patients before surgery reduces the rate of post-surgical staph infection? State the null and alternative hypotheses, find the test statistic, and use either software or the bottom row of Table C for the P-value.

Reference no: EM13114685

Questions Cloud

Why is the cost allocation method used : Why is the cost allocation method used by an organization an important part of its cost accounting system?

Why might results of survey be inaccurate : A female student wants to determine whether or not students at the college like the cafeteria's food. Why might the results of this survey be inaccurate?

Explain what are the advantages and disadvantages to it : Explain What are the advantages and disadvantages to IT support for these strategies? What changes to a company's business strategy can occur when IT support increases?

Prepare a production budget : They also have a policy of maintaining a raw material inventory at the end of each month equal to 20% of the pounds needed for the following month's production. There were 3,920 pounds of raw material on hand at Dec. 31, 2010, For the first quarter o..

Explain reduces rate of post-surgical staph infection : Is there good evidence that treatment of staph-positive patients before surgery reduces the rate of post-surgical staph infection?

Determine the probability of an event : A contingent liability should be created if it probable that the liability will occur and the amount of the loss can be reasonably estimated. How is the probability of an event occurring determined? Is this based on an estimate of the likelihood of..

Determining the exchange rates of intel : Intel has the choice of borrowing dollars at 9.5% or yen at 7% for one year. The current exchange rate is ?152=$1. At what end of year exchange rate would the yen costs of these two loans be equal?

Find two telecommunication system equally liked : Independent random samples of 12 users of the other system rate their system on the same scale. Based on these data, are the two telecommunication system equally liked? Explain.

Explain how many people you need to hire : Explain how many people you need to hire and in what functional areas, such as manufacturing, operations, customer service, distribution, marketing, and accounting. Develop strategies to recruit the appropriate applicants.

User Account

All Pages