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Home Q & A Board Science-Related Homework Help Mathematics Statistics and Probability
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Skoochy Skoochy
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6 years ago
In order to estimate the average time spent per student on the computer terminals at a local university, data were collected for a sample of 81 business students over a one-week period. Assume the population standard deviation is 1.8 hours. If the sample mean is 9 hours, then the 95 confidence interval is
 a. 7.04 to 10.96 hours.
  b. 7.36 to 10.64 hours.
  c. 7.80 to 10.20 hours.
  d. 8.61 to 9.39 hours.
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FredioFredio
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6 years ago
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Skoochy Author
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6 years ago
Thanks for your help!!
Loruiz15
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Yesterday
Good timing, thanks!
aricketts6@
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2 hours ago
Correct Slight Smile TY
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