Kris works for the MESA Air Pollution Study at UW, and studies the correlation be-tween air pollution and the disease atherosclerosis. Nationally, 40% of adults suffer fromatherosclerosis. Kris suspects that the proportion of people with atherosclerosis in high-pollution areas is higher. In a random sample of 600 residents of high-pollution areas,he finds that 270 (45%) subjects have atherosclerosis. At the 1% level (α= .01), is thisgood evidence that people in high-pollution areas are more likely to have atherosclerosis? (a) Which of the following is theHa? (research claim or alternate)A.Ha:p≥0.40B.Ha:̂p≥0.40C.Ha:p >0.40D.Ha:̂p >0.40E.Ha:̂p >0.45F.Ha:p >0.45G.Ha:̂p≥0.45H.Ha:p≥0.45I. (b) Which of the following is the correct formula to compute Test Statistic (TS)?A. Z=0.40−0.45√0.45(1−0.45)/600 B. Z =0.45−0.40√0.40(1−0.40)/600 C. Z =0.45−0.40√.45×.55600 D. None of these (c) What is the value of Test Statistic (TS)? (d) What is p-value? (e) ConclusionA. RejectH0B. Fail to rejectH0 (f) InterpretationA. There is enough evidence (from data) in support of KRIS claimB. There is not enough evidence (from data) in support of KRIS claim
Kris works for the MESA Air Pollution Study at UW, and studies the correlation be-tween air pollution and the disease atherosclerosis. Nationally, 40% of adults suffer fromatherosclerosis. Kris suspects that the proportion of people with atherosclerosis in high-pollution areas is higher. In a random sample of 600 residents of high-pollution areas,he finds that 270 (45%) subjects have atherosclerosis. At the 1% level (α= .01), is thisgood evidence that people in high-pollution areas are more likely to have atherosclerosis? (a) Which of the following is theHa? (research claim or alternate)A.Ha:p≥0.40B.Ha:̂p≥0.40C.Ha:p >0.40D.Ha:̂p >0.40E.Ha:̂p >0.45F.Ha:p >0.45G.Ha:̂p≥0.45H.Ha:p≥0.45I. (b) Which of the following is the correct formula to compute Test Statistic (TS)?A. Z=0.40−0.45√0.45(1−0.45)/600 B. Z =0.45−0.40√0.40(1−0.40)/600 C. Z =0.45−0.40√.45×.55600 D. None of these (c) What is the value of Test Statistic (TS)? (d) What is p-value? (e) ConclusionA. RejectH0B. Fail to rejectH0 (f) InterpretationA. There is enough evidence (from data) in support of KRIS claimB. There is not enough evidence (from data) in support of KRIS claim
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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A correlation is used to determine the relationships between numerical and categorical variables. In other words, it is an indicator of how things are connected to one another. The correlation analysis is the study of how variables are related.
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Question
Kris works for the MESA Air Pollution Study at UW, and studies the correlation be-tween air pollution and the disease atherosclerosis. Nationally, 40% of adults suffer fromatherosclerosis. Kris suspects that the proportion of people with atherosclerosis in high-pollution areas is higher. In a random sample of 600 residents of high-pollution areas,he finds that 270 (45%) subjects have atherosclerosis. At the 1% level (α= .01), is thisgood evidence that people in high-pollution areas are more likely to have atherosclerosis?
(a) Which of the following is theHa? (research claim or alternate)A.Ha:p≥0.40B.Ha:̂p≥0.40C.Ha:p >0.40D.Ha:̂p >0.40E.Ha:̂p >0.45F.Ha:p >0.45G.Ha:̂p≥0.45H.Ha:p≥0.45I.
(b) Which of the following is the correct formula to compute Test Statistic (TS)?A. Z=0.40−0.45√0.45(1−0.45)/600 B. Z =0.45−0.40√0.40(1−0.40)/600 C. Z =0.45−0.40√.45×.55600 D. None of these
(c) What is the value of Test Statistic (TS)?
(d) What is p-value?
(e) ConclusionA. RejectH0B. Fail to rejectH0
(f) InterpretationA. There is enough evidence (from data) in support of KRIS claimB. There is not enough evidence (from data) in support of KRIS claim
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