statistics

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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 -

    95% = mean ± 1.96 SEm

    SEm = SD/√n

  • statistics -

    130

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