Week (14)

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American Military University *

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302

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Statistics

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Feb 20, 2024

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1

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. ChatGPT @ Week 5 Knowledge Check Homework Practice Questions < Back to Content = Week 5 Knowledge Check Homework Practice Questions @ @ Question 14 1/ 1 point After calculating the sample size needed to estimate a population proportion to within 0.05, you have been told that the maximum allowable error (E) must be reduced to just 0.025. If the original calculation led to a sample size of 1000, the sample size will now have to be___. Place your answer, as a whole number in the blank. For example, 2345 would be a legitimate entry. Answer: 4000 v ¥ Hide question 14 feedback Use n=p'p* Z 2 (38 1000= .5*.5 * Z 2 ( .05 ) 4000 = Z 2 ( .05 ) V4000 = — " .05 V4000 * .05 = Z 3.16227=2 Now solve for n, using Z n=.5*5" 316227 .025 Question 15 1/ 1 point The percent defective for parts produced by a manufacturing process is targeted at 4%. The process is monitored daily by taking samples of sizes n = 160 units. Suppose that today's sample contains 14 defectives.
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