anonymous
  • anonymous
Which is a correct interpretation of the 95% confidence interval, 580 < μ < 594, found for the following: A random sample of 94 light bulbs had a mean life of x = 587 hours with a standard deviation of  = 36 hours.
Mathematics
jamiebookeater
  • jamiebookeater
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dumbcow
  • dumbcow
Confidence interval = 587+- s/sqrt(n) s= 36 n = 94
dumbcow
  • dumbcow
correction** Confidence interval = 587+-2( s/sqrt(n)) 95% encompasses 2 deviations from mean in normal distribution

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