Time Remaining: 00:38:32 Submit Quiz This Question: 1 pt 8 of 10 (0 complete) Th

Question

Time Remaining: 00:38:32 Submit Quiz This Question: 1 pt 8 of 10 (0 complete) This Quiz: 20 pts possible A gigantic warehouse stores approximately 40 million empty aluminum beer and soda cans. R rendering them unusable. A statistician was hired by the insurance company to estmate p, c ecently, a fire occurred at the warehouse. The smoke from the fire contaminated many of the cans with the true proporton of cans in the warehouse that were contaminated by blackspot, the fre How many aluminum cans should be randomly sampled to estimate p to within 0 04 with 90% confidence? The staistician should sample cans to estimate the proportion that were Round up to the nearest can.) contaminated by the fre to wthn 004wth 90% confidence Enter your answer in the answer box. 6 7 8 9

Explanation / Answer

here margin of error E = 0.04 for90% CI crtiical Z          = 1.6449 estimated proportion=p= 0.500 required sample size n =         p*(1-p)*(z/E)2= 423.00

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