The authors of the paper "Statistical Methods for Assessing Agreement Between Two Methods of Clinical Measurement" compared two different instruments for measuring a subject's ability to breathe out air.† (This measurement is helpful in diagnosing various lung disorders.) The two instruments considered were a Wright peak flow meter and a mini-Wright peak flow meter. Seventeen subjects participated in the study, and for each subject air flow was measured once using the Wright meter and once using the mini-Wright meter. Subject Mini- Wright Meter Wright Meter Subject Mini- Wright Meter Wright Meter 1 512 494 10 445 433 2 430 395 11 432 417 3 520 516 12 626 656 4 428 434 13 260 267 5 500 476 14 477 478 6 600 557 15 259 178 7 364 413 16 350 423 8 380 442 17 451 427 9 658 650       (a) Suppose that the Wright meter is considered to provide a better measure of air flow, but the mini-Wright meter is easier to transport and to use. If the two types of meters produce different readings but there is a strong relationship between the readings, it would be possible to use a reading from the mini-Wright meter to predict the reading that the larger Wright meter would have given. Use the given data to find an equation to predict y = Wright meter reading using a reading from the mini-Wright meter. (Round your values to four decimal places.) ŷ =  +       x (b) What would you predict for the Wright meter reading of a subject whose mini-Wright meter reading was 582? (Round your answer to three decimal places.)   (c) What would you predict for the Wright meter reading of a subject whose mini-Wright meter reading was 345? (Round your answer to three decimal places.)

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The authors of the paper "Statistical Methods for Assessing Agreement Between Two Methods of Clinical Measurement" compared two different instruments for measuring a subject's ability to breathe out air.† (This measurement is helpful in diagnosing various lung disorders.) The two instruments considered were a Wright peak flow meter and a mini-Wright peak flow meter. Seventeen subjects participated in the study, and for each subject air flow was measured once using the Wright meter and once using the mini-Wright meter.
Subject Mini-
Wright
Meter
Wright
Meter
Subject Mini-
Wright
Meter
Wright
Meter
1 512 494 10 445 433
2 430 395 11 432 417
3 520 516 12 626 656
4 428 434 13 260 267
5 500 476 14 477 478
6 600 557 15 259 178
7 364 413 16 350 423
8 380 442 17 451 427
9 658 650      
(a)
Suppose that the Wright meter is considered to provide a better measure of air flow, but the mini-Wright meter is easier to transport and to use. If the two types of meters produce different readings but there is a strong relationship between the readings, it would be possible to use a reading from the mini-Wright meter to predict the reading that the larger Wright meter would have given. Use the given data to find an equation to predict y = Wright meter reading using a reading from the mini-Wright meter. (Round your values to four decimal places.)
ŷ =  + 
 
  
 
x
(b)
What would you predict for the Wright meter reading of a subject whose mini-Wright meter reading was 582? (Round your answer to three decimal places.)
 
(c)
What would you predict for the Wright meter reading of a subject whose mini-Wright meter reading was 345? (Round your answer to three decimal places.)
 
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