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Homework Help: statistics

Posted by Anonymous on Sunday, July 22, 2012 at 5:09pm.

A group of statistics students decided to conduct a survey at their university to find the average (mean) amount of time students spent studying per week. Assuming a population standard deviation of 6 hours, what is the required sample size if the error should be less than ½ hour with a 95% level of confidence?

• statistics - PsyDAG, Monday, July 23, 2012 at 1:54pm

  95% = mean ± 1.96 SEm
  
  SEm = SD/√n
  

• statistics - juan, Saturday, April 6, 2013 at 11:44pm

  130
  

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