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…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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5 to 10 grams or more of soluble fiber a day decreases your LDL cholesterol according to Mayo Clinic. A cereal manufacturer 'Healthy Goals' claims that their high fiber cereals help reduce the LDL numbers among 76% people who eat 'Healthy Goals' cereals. In a random sample of 65 people who eat cereals made by 'Healthy Goals' 44 reported their LDL cholesterol numbers being lowered. Based on this sample is the claim made by the company that 76% lower their LDL really true?" Do necessary calculation and answer the question. Do not simply put down yes/no answers. Give a reason and supporting work for your answer Edit View Insert Format Tools Table 12pt v Paragraph v BIU T? v Desktop DELL ... 17
#32). Please show work and answers, need to see how it’s done. Thank you!
36% of canadians are single and 20 % are corona infected whereas 12 % are single and corona infected. Given that a selected individual is married, the probabilty that he/ she is corona infected 0.750 0.125 0.250 0.875
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What is difference between type 1 and type 2 errors?
A researcher takes a sample of 50 individuals and administers a background check to identify the number of prior arrests for each person. For whatever reason, one person is removed from the analysis and another random person is selected to replace that person. Having no additional information, what is your best guess of the number of prior arrests experienced by the replacement person? Why?
Polyunsaturated fatty acids in the diet favorably affect several risk factors for cardiovascular disease. The principal dietary polyunsaturated fat is linoleic acid. Suppose we randomly selected twelve adults for our study. We took their blood pressure measurements (systolic blood pressure) at the start and recorded them for each adult. Then we placed required these adults to consume 23g/day of safflower oil which is high in linoleic acid for four weeks. At the end of the four weeks, we took another systolic blood pressure(SBP) measurement. The paired data is provided below: Subject 1 2 3 4 5 6 7 8 9 10 11 12 Baseline SBP 119.67 100.00 123.56 109.89 96.22 133.33 115.78 126.39 122.78 117.44 111.33 92.39 1-month SBP 117.33 98.78 123.83 107.67 95.67 128.89 113.22 121.56 126.33 110.39 107.00 93.06 Use the appropriate nonparametric test at alpha level of 0.05, to test whether the diet heavy in linoleic acid increases systolic blood pressure (SBP). Use Steps 0-5
Acne is a common skin disease that affects most adolescents and can continue into adulthood. A study compared the effectiveness of three acne treatments and a placebo, all in gel form, applied twice daily for 12 weeks. The study's 517 teenage volunteers were randomly assigned to one of the four treatments. Success was assessed as clear or almost clear skin at the end of the 12 week period. The results of the study can be seen in the table below. Using the appropriate statistical test, determine if there is significant evidence that the four treatments perform differently. If so, how do they compare.
Evaluate the effectiveness of alternative screening tests when given appropriate information.
The school registrar estimates that the dropout rate of freshmen high schools in Valenzuela is 20%. Last year, 90 freshmen from a random sample of 500 Valenzuela freshmen high school withdrew. At 0.01, is there enough evidence to reject the registrar's claim?
webassign.net/web/Student/Assignment-Responses/submit?pos=10&dep=22704121&tags=autos A newspaper infographic titled "Social Media Jeopardizing Your Job?" summarized data from a survey of 1,825 recruiters and human resource professionals. The infographic indicated that 53% of the people surveyed had reconsidered a job candidate based on his or her social media profile. Assume that the sample is representative of the population of recruiters and human resource professionals in the United States. (a) Use the given information to estimate the proportion of recruiters and human resource professionals who have reconsidered a job candidate based on his or her social media profile using a 95% confidence interval. (Use a table or technology. Round your answers to three decimal places.) Give an interpretation of the interval in context. There is a 95% chance that the true proportion of recruiters and human resource professionals who have reconsidered a job candidate based on his or her social…
The worker on examining his 20 rainfall sample points concluded that it is more than likely to rain on this May 1st. Describe two or three statistical steps he took to arrive at this conclusion.

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