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Question

Secure https://www.mathxl omeworkid 4783996 2&flushed-false;&cids; 4970063&centerve; Econ321 ONLINE Summer2018 Homework: CH 9 HW ONLINE Score: 0 of 1 pt 9.1.33 morgan stoaks&I; 619/18 228 PM 17 of 35 (23 complebe) MN Score: 60.08%, 21.03 of 35 p Question Help C A researcher wishes to estimate the whn O 05 with 95% cor-dence if (a) she uses a previous estimate of 0387 (b) she does hot use any prior estimaties? ofackits whohave high, peod Intenet aocessWhat sine sample should be obtined ? she wishes he estimate to be a)n(Round up to the nearet integer) Enter your answer in the answer box and then click Check Answer Clear A Check Anower 3 5 6

Explanation / Answer

Solution:-

A. n = 362

If you know p?, use: n = p?(1-p?)*[(z?/?)/E]²
n= 0.38*(1-0.38)*(1.96/0.05)²
n = 362.032
B. n=384

If you don't know p?, use: n=0.25•[(z?/?)/E]²
n = 0.25(1.96/0.05)²
n = 384.16

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