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Home Q & A Board Science-Related Homework Help Mathematics
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gracehiller11 gracehiller11
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6 years ago
In order to estimate the average electric usage per month, a sample of 81 houses was selected and the electric usage was determined. Assume a population standard deviation of 450 kilowatt-hours. At 95 confidence, the size of the margin of error is
 a. 1.96.
  b. 50.00.
  c. 98.00.
  d. 42.00.
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gool34gool34
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6 years ago
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gracehiller11 Author
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6 years ago
This calls for a celebration Person Raising Both Hands in Celebration
jaray75
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Yesterday
Thanks for your help!!
2ne1_12345
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2 hours ago
You make an excellent tutor!
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