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Home Q & A Board Science-Related Homework Help Mathematics Statistics and Probability
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stroman54 stroman54
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6 years ago
In order to estimate the average electric usage per month, a sample of 196 houses was selected and their electric usage was determined.
 a. Assume a population standard deviation of 350 kilowatt-hours. Determine the standard error of the mean.
  b. With a .95 probability, determine the margin of error.
  c. If the sample mean is 2000 kWh, what is the 95 confidence interval estimate of the population mean?
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wrote...
#1
6 years ago
a . 25
b. 49
c. 1951 to 2049 kWh
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