Question

In: Statistics and Probability

An article published in USA today stated that “in a study of colorectal surgery patients; 104...

An article published in USA today stated that “in a study of colorectal surgery patients; 104 were kept warm with blankets & 96 were kept cool. The results show that only 6 of those “warmed patients” developed wound infection vs. 18 who were kept cool. Let x = number of colorectal surgery patients who developed wound infection a) At the 0.02 level of significance, test the claim of the article’s headline: Warmer Surgical Patients Recover Better (higher recovery rate for Warmer Surgical Patients)

Sample 1 Sample 2

Claim:

1- H0:

H1:

2- Test Statistic:

3- Critical Region/Critical Value:

4- Decision about H0: b) (5 points) Find the P-value in part (a) and make a decision about H0

Solutions

Expert Solution

orchestra answered 1 year ago
Next > < Previous

Related Solutions

An article published in USA today stated that “in a study of colorectal surgery patients; 104...
An article published in USA today stated that “in a study of colorectal surgery patients; 104 were kept warm with blankets & 96 were kept cool. The results show that only 6 of those “warmed patients” developed wound infection vs. 18 who were kept cool. Let x = number of colorectal surgery patients who developed wound infection At the 0.02 level of significance, test the claim of the article’s headline: Warmer Surgical Patients Recover Better (higher recovery rate for Warmer...
1. Based on the attached article that was written by Deirdre Shesgreen of the USA Today,...
1. Based on the attached article that was written by Deirdre Shesgreen of the USA Today, dated April 9, 2018, respond to the following questions: a) Distinguish between debt and deficit. b) Discuss the relationship between deficits and the debt, i.e., how does one effect the other. c) According to the head of the Peter G. Peterson Foundation, “the debt would hit its highest level since World War II in 10 years, crowding out private investment and reducing the government's...
1. Based on the attached article that was written by Deirdre Shesgreen of the USA Today,...
1. Based on the attached article that was written by Deirdre Shesgreen of the USA Today, dated April 9, 2018, respond to the following questions: a) Distinguish between debt and deficit. b) Discuss the relationship between deficits and the debt, i.e., how does one effect the other. c) According to the head of the Peter G. Peterson Foundation, “the debt would hit its highest level since World War II in 10 years, crowding out private investment and reducing the government's...
In a USA Today/Gallup poll, 768 of 1024 randomly selected adult Americans stated that a candidate’s...
In a USA Today/Gallup poll, 768 of 1024 randomly selected adult Americans stated that a candidate’s positions on the issue of family values are extremely or very important in determining their vote for president. Obtain a point estimate for the proportion of adult Americans for which the issue of family values is extremely or very important in determining their vote for president. Verify that the requirements for constructing a confidence interval for p are satisfied Construct 90%, 95% and 99%...
One of the authors came across an article (USA Today, 2008) that said that on average...
One of the authors came across an article (USA Today, 2008) that said that on average Americans have visited 16 states in the United States. In a survey of 50 students in her introductory statistics class, she found the average number of states the students had visited to be 9.48 and the standard deviation to be 7.13. The data were not strongly skewed.​ 1. Identify the observational unit for this study. a. students b. Americans c. number of states 2....
Part A: A USA Today article claims that the proportion of people who believe global warming...
Part A: A USA Today article claims that the proportion of people who believe global warming is a serious issue is 0.6, but given the number of people you've talked to about this same issue, you believe it is less than 0.6. The hypotheses for this test are Null Hypothesis: p ≥ 0.6, Alternative Hypothesis: p < 0.6. You take a random sample and perform a hypothesis test, getting a p-value of 0.0831. What is the appropriate conclusion? Conclude at...
A recent article in USA Today reported that a job awaits 33% of new college graduates....
A recent article in USA Today reported that a job awaits 33% of new college graduates. The major reasons given were an overabundance of college graduates and a weak economy. A survey of 200 recent graduates from your school revealed that 80 students had jobs. At a 99% level of confidence, can we conclude that a larger proportion of students at your school have jobs? (a) State the null and alternate hypothesis. (b) Determine which distribution to use for the...
Question 11 (1 point) Saved A USA Today article claims that the proportion of people who...
Question 11 (1 point) Saved A USA Today article claims that the proportion of people who believe global warming is a serious issue is 0.52, but given the number of people you've talked to about this same issue, you believe it is less than 0.52. The hypotheses for this test are Null Hypothesis: p ≥ 0.52, Alternative Hypothesis: p < 0.52. If you randomly sample 29 people and 17 of them believe that global warming is a serious issue, what...
A newspaper published an article about a study in which researchers subjected laboratory gloves to stress....
A newspaper published an article about a study in which researchers subjected laboratory gloves to stress. Among 225 vinyl? gloves, 60?% leaked viruses. Among 225 latex? gloves, 9?% leaked viruses. Using the accompanying display of the technology? results, and using a 0.05 significance? level, test the claim that vinyl gloves have a greater virus leak rate than latex gloves. Let vinyl gloves be population 1. Technology Results::: Pooled? proportion: 0.35 Test? statistic, z: 11.2921 Critical? z: 1.6449 ?P-value: 0.0000 90?%...
A newspaper published an article about a study in which researchers subjected laboratory gloves to stress....
A newspaper published an article about a study in which researchers subjected laboratory gloves to stress. Among 242 vinyl​ gloves, 66​% leaked viruses. Among 242 latex​ gloves, 10​% leaked viruses. Using the accompanying display of the technology​ results, and using a 0.05 significance​ level, test the claim that vinyl gloves have a greater virus leak rate than latex gloves. Let vinyl gloves be population 1.
ADVERTISEMENT
Subjects
ADVERTISEMENT
Latest Questions
ADVERTISEMENT