Table 2: Test ResultsDiabeticNot DiabeticPositive to urine test, negative to blood73Positive to blood test, negative to urine2311Positive to both tests457Negative to both tests1247,620ТОTAL1997,641a. How do the sensitivity or specificity of each combination of the tests changewhen compared with single test?b. assuming you are the harried director of the diabetes screening program, whichtest or combination of tests would you prefer to use?

Given information: Test Results Diabetic Not Diabetic Positive urine test, Negative to blood 7…

Answered: Table 2: Test Results Diabetic Not…

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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Researchers wanted to know the effectiveness of a new allergy medicine. A study was conducted on 500 adults who experience allergy symptoms. Each adult was randomly assigned to receive the new allergy medicine or a placebo. Researchers recorded whether or not their symptoms improved within 1 week. a. Complete the two-way table summarizing the findings. Allergy Medicine Placebo Total Symptoms Improved 85 80 Symptoms DidNot Improve Total 215 285 500 b. Use the study results to complete the following. Round your answer to the nearest tenth of a percent, as needed. Notice the percent sign is already included, so you just need to type the number. What percent of the adults in this study were given the new allergy medicine? % What percent of those who experienced improvements received the allergy medicine? % What percent of those who received the allergy medicine experienced improvements? % What percent of those who did not received the allergy…
C. -2.3418 O d. None of the answers is correct O e. -2,3568 QUESTION 12 The Global Business Travel Association (GBTA) reported the domestic airfare for business travel for the current year and the previous year. Below is a sample of 6 flights with their domestic airfares (in $) shown for both years. Suppose GBTA wished to see if the average airfare for the current year is greater than the average airfare for the previous year at a=.025. Current 333 733 534 430 233 638 Previous 321 725 530 433 223 627 For the hypothesis stated above, what is the P-value? O a. 01 < P-value <.025 Ob. .001 < P-value <.005 O c. 95 < P-value < .975 O d. None of the answers is correct O e. .025 < P-value < .05 QUESTION 13 Save All Answer Click Save and Submit to save and submit. Click Save All Answers to save all answers. MacBook Pro DD F9
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THE MANAGER OF A SERVICE STATION IS IN THE PROCESS OF ANALYZING THE NUMBER OF TIMES CAR OWNERS CHANGE THE OIL IN THEIR CARS. SHE BELIEVES THAT THE AVERAGE MOTORIST CHANGES HIS OR HER CAR'S OIL LESS FREQUENTLY THAN RECOMMENDED BY THE OWNER'S MANUAL (TWO TIMES PER YEAR). IN A PRELIMINARY SURVEY SHE ASKED 14 CAR OWNERS HOW MANY TIMES THEY CHANGED THEIR CARS' OIL IN THE LAST 12 MONTHS. THE RESULTS ARE 1, 1, 2, 0, 3, 3,0, 1, 0, 1, 2, 3, 3, AND 1. 2.1 Does this data provide sufficient evidence at the 10% significance level to indicate that the manager is correct? 2.2 Ho: H₁: Rejection region: Test statistic: Decision: Conclusion: What condition is required in order to analyze this data using a t-test?

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