searchF2WQuestion 75XA screening test was constructed as a way of checking to see if Retinal Vein Pulsation (RVP) was reliable as a test for Intracranial Pressure (IP). The absence of RVPis considered to be indicative of dangerous IP. So the test looks for absence of RVP and in that sense "absence" is a "positive" outcome. A study enrolled 189 andeach patient was given this RVP test. Results of this testing, along with a categorization of High or Normal IP is in the table below. What is the false positive rateof this screening test?Presence of RVP (negative)RVP Test Absence of RVP (positive)TotalsO 43/43 = 1O 43/61=0.705HZ GAMING DISPLAY18/61 = 0.295O 18/146 = 0.123◄ PreviousF33EUFLth4RF44XFSV%Intracranial PressureHigh IP(positive) Normal IP (negative) Totals12812818146LD5€T04343WF6BGF7H7FB361189ㄱ*F9HE UKF109LJNo new data to save. Last checked at 9:14amALT GR▾F111>F12{SCROLLLOCK[?+}Next3 ptsSubmit QuizINSERT44°F SunrDELETEBACKSPACEHENSHIFTCTRL

The objective of this question is to calculate the false positive rate of the screening test for…

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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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Lung cancer is the leading cause of cancer-related deaths in the United States. Researchers examined the idea of testing all Medical-enrolled heavy smokers for lung cancer with a computed tomography (CT) scan every year. In this population, the lifetime chance of developing lung cancer is high. In any given year, approximately 3% of heavy smokers develop lung cancer. The CT scan positively identifies lung cancer 89% of the time, and it gives a negative result for 93% of individuals who do not have lung cancer.
A recent survey asked 1200 randomly selected U.S. adults if they believe that the U.S. federal government is doing enough to keep U.S. elections safe from outside interference. Of the survey participants, 620 were men and 580 were women. The researchers wanted to know if there was a difference in how men and women responded and decided to conduct a hypothesis test. The researchers predict that there is no difference between the proportion of women (p1) and men (p2) who believe that the U.S. federal government is not doing enough to keep elections safe. Which of the following are the correct null and alternative hypotheses to test this claim? a. Ho: p1 # p2 and Ha: p1 = p2 b. Ho: p1 = p2 and Ha: p1< p2 c. Ho: p1 > p2 and Ha: p1 # p2 d. Ho: p1 = p2 and Ha: p1 # p2
A researcher is interested in the effect of the pandemic on social media use among college students. The researcher hypothesizes that college students spend more time on social media than they did before the pandemic. To test his hypothesis, he randomly selected 50 college students and asked how many hours do they spend on social media per day before and after the pandemic. What is the research question? Do college students spend more time on social media that they did before the pandemic? What is/are the variable(s)? What graphs can be used to display the variable(s) visually? What statistical test can be used to answer the research question?
A researcher is interested in the effect of the pandemic on social media use among college students. The researcher hypothesizes that college students spend more time on social media than they did before the pandemic. To test his hypothesis, he randomly selected 50 college students and asked how many hours do they spend on social media per day before and after the pandemic. What is the research question? Do college students spend more time on social media that they did before the pandemic? What is/are the variable(s)? What graphs can be used to display the variable(s) visually? Variables- social media & college students. The graph that could be used is What statistical test can be used to answer the research question?
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People often wait till middle age to worry about having a healthy heart. However, recent studies have shown that earlier monitoring of risk factors such as blood pressure can be very beneficial (The Wall Street Journal, January 10, 2012). Having higher than normal blood pressure, a condition known as hypertension, is a major risk factor for heart disease. Suppose a large sample of individuals of various ages and gender was selected and that each individual’s blood pressure was measured to determine if they have hypertension. For the sample data, the following table shows the percentage of individuals with hypertension. Develop a side-by-side bar chart with age on the horizontal axis, the percentage of individuals with hypertension on the vertical axis, and side-by-side bars based on gender. What does the display you developed in part (a), indicate about hypertension and age? Comment on differences in gender. Age Male Female 20 - 34 11.0% 9.0% 35 – 44…
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A physical fitness club evaluates a diet program, then randomly selects 10 members to follow the training program for 3 months.The data taken is body weight before and after the diet program is implemented shown on table enclosed : Can this diet program reduce weight more than 5 kg?Do the test at the 5% level of significance!

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