3. We are screening 200 college students for Caffeine-itis, a condition caused by the intakeof too much caffeine during exam periods. Our new screening test assesses the amountof caffeine in the urine. At the time of screening, the test determined that there were 110samples positive for caffeine. Of those positive results, 30 samples were false positives.We know that there are 100 students with confirmed Caffeine-itis based on diagnostictesting performed by a physician. Calculate the specificity and sensitivity of the test aswell as the predictive values (positive and negative) for the data.A screening test is being developed to detect spring fever, a chronic illness mostprevalent in the spring months of the year. One hundred fifty (150) individuals were(Accessibility: InvestigatePATII1994SWFocus

The following information is obtained: Being positive (+ve) and negative (-ve) purely based on the…

Answered: We are screening 200 college students…

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.6: Summarizing Categorical Data

Problem 30PPS

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An article published in the “American Journal of Public Health” describes the results of a health survey administered to 119 male convicts, 50 years of age or older, residing in a state social rehabilitation center. It was found that 21.6% of them claimed to have a history of venereal diseases. Based on these findings, we wish to evaluate whether more than 15% of this population has a history of venereal diseases. After evaluating the information, what would be the conclusion? A. In the population of male convicts aged 50 years or older, residing in the state social rehabilitation center, more than 15% have a history of venereal diseases. B. In the population of male convicts aged 50 years or older, residing in the state social rehabilitation center, it is not possible to say that more than 15% have a history of venereal diseases. C. In the population of male convicts aged 50 years or older, residing in the state social rehabilitation center, on average more or less 21.6% have a…
Are sexually active teenagers any better informed about AIDS and other potential health problems related to sex? A 15-item test of general knowledge about sex and health was administered to random samples of teens who are sexually inactive, teens who are sexually active but only with a single partner ("going steady"), and teens who are sexually active with more than one partner. Is there any significant difference in the test scores?
Type O-negative blood type is called the universal donor type because it is compatible with any blood type. The American Red Cross reported that the proportion of O-negative blood type in the U.S. is about 7%. A physician assistant wishes to estimate the proportion, p, of individuals with an O- negative blood type. He conducts a survey and in a random sample of 300 records from a large hospital, 27 were found to have type O-negative blood type. The sample proportion is _____________. Give a 95% confidence interval for the proportion of O-negative blood type in this hospital. Interpret your interval with the context. Test if there is strong evidence that the proportion of O- negative blood type from a large hospital is different the national proportion. State your conclusion at 5% significance level. Which method will you use to perform the test? Choose the correct one. 1-sample T test 1-sample Z test 1-proportion Z test. 2-proportion Z test Which distribution will…
An article published in the “American Journal of Public Health” describes the results of a health survey administered to 119 male convicts, 50 years of age or older, residing in a state social rehabilitation center. It was found that 21.6% of them claimed to have a history of venereal diseases. Based on these findings, we wish to evaluate whether more than 15% of this population has a history of venereal diseases. What would be the p value that allows evaluating the research question? A. 4.32 B. 2.09 C. -1.72 D. 0.018 E. 0.957
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Based on information from a large insurance company, 66% of all damage liability claims are made by single people under the age of 25. A random sample of 51 claims showed that 43 were made by single people under the age of 25. Does this indicate that the insurance claims of single people under the age of 25 is higher than the national percent reported by the large insurance company? Give the test statistic and your conclusion.
We are screening 200 college students for Caffeine-itis, a condition caused by the intake of too much caffeine during exam periods. Our new screening test assesses the amount of caffeine in the urine. At the time of screening, the test determined that there were 110 samples positive for caffeine. Of those positive results, 30 samples were false positives. We know that there are 100 students with confirmed Caffeine-itis based on diagnostic testing performed by a physician. Calculate the specificity and sensitivity of the test as well as the predictive values (positive and negative) for the data.
From public records, individuals were identified as having been charged with drunken driving not less than 6 months or more than 12 months from the starting date of the study. Two random samples from this group were studied. In the first sample of 25 individuals, the respondents were asked in a face-to-face interview if they had been charged with drunken driving in the last 12 months. Of these 25 people interviewed face to face, 11 answered the question accurately. The second random sample consisted of 40 people who had been charged with drunken driving. During a telephone interview, 26 of these responded accurately to the question asking if they had been charged with drunken driving during the past 12 months. Assume the samples are representative of all people recently charged with drunken driving. (a) Categorize the problem below according to parameter being estimated, proportion p, mean μ, difference of means μ1 – μ2, or difference of proportions p1 – p2. Then solve the problem.…

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