E Question HelpQuA physical therapist wants to detemine the difference in the proportion of men and women who participate in regular sustained physical activity. What sample sizeshould be obtained if he wishes the estimate to be within three percentage points with 99% confidence, assuming thatStWe(a) he uses the estimates of 22.1% male and 19.3% female from a previous year?(b) he does not use any prior estimates?St(Round up to the nearest whole number.)(a) n=Gr(b) n=(Round up to the nearest whole number.)StaमिCheTToMuPu31DisCoEnter your answer in each of the answer boxes.262728P PearsonPrivacy Policy Permissions Co2019 Pearson Education Inc. All rights reserved. I Terms of Use |Copyright

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Asked Dec 9, 2019
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E Question Help
Qu
A physical therapist wants to detemine the difference in the proportion of men and women who participate in regular sustained physical activity. What sample size
should be obtained if he wishes the estimate to be within three percentage points with 99% confidence, assuming that
St
We
(a) he uses the estimates of 22.1% male and 19.3% female from a previous year?
(b) he does not use any prior estimates?
St
(Round up to the nearest whole number.)
(a) n=
Gr
(b) n=(Round up to the nearest whole number.)
Sta
मि
Ch
eT
To
Mu
Pu
31
Dis
Co
Enter your answer in each of the answer boxes.
26
27
28
P Pearson
Privacy Policy Permissions Co
2019 Pearson Education Inc. All rights reserved. I Terms of Use |
Copyright
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E Question Help Qu A physical therapist wants to detemine the difference in the proportion of men and women who participate in regular sustained physical activity. What sample size should be obtained if he wishes the estimate to be within three percentage points with 99% confidence, assuming that St We (a) he uses the estimates of 22.1% male and 19.3% female from a previous year? (b) he does not use any prior estimates? St (Round up to the nearest whole number.) (a) n= Gr (b) n=(Round up to the nearest whole number.) Sta मि Ch eT To Mu Pu 31 Dis Co Enter your answer in each of the answer boxes. 26 27 28 P Pearson Privacy Policy Permissions Co 2019 Pearson Education Inc. All rights reserved. I Terms of Use | Copyright

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(a)

From the given information, 99% confidence estimate of the difference in the true propor...

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The estimates of the previous yearis given as P = 0.221 and i, =0.193 Themargin of erroris, (1– §) , Ê (1- ô,) E = Z001 +0.03 = 2.58, 0.221(1–0.221)+0.193(1–0.193)] 0.328 +0.03 = 2.58, n= 2.58 0.328 0.03 = 2, 425.88 * 2,426

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