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In: Math

Please do the math by hand, do not use a program, I need to see the...

Please do the math by hand, do not use a program, I need to see the procedure, the answer itself is less important.

Comparison of peak expiratory flow rate (PEFR) before and after a walk on a cold winter's day for a random sample of 9 asthmatics. Use the following data to determine if the patients conditioned changed after a walk. Present your results and make some interpretations.

Subject

Before

After

1

312

300

2

242

201

3

340

232

4

388

312

5

296

220

6

254

256

7

391

328

8

402

330

9

290

231

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