CappoHD7606 CappoHD7606
  • 17-11-2021
  • Mathematics
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If no preliminary study is done, what size sample must be taken if the director is to say with 90% confidence that the sample estimate is within 2% of the population proportion

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msnisajohnson
msnisajohnson msnisajohnson
  • 17-11-2021
Answer: Given a population standard deviation of 6.2 units per hour, if you have a sample size ≥47 the margin of error in a 90% confidence
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