In a large city, the average number of lawn mowings

tutor4helpyou
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In a large city, the average number of lawn mowings during summer is normally distributed with mean μ and standard deviation σ = 9.9.  If I want the margin of error for a 90% confidence interval to be ±4, I should select a simple random sample of size ??
  • 11 years ago
Answer for: In a large city, the average number of lawn mowings
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