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Posted by on Wednesday, November 2, 2011 at 8:36am.

The average teenager spends 7.5 hours per week playing computer and video games. In a random sample of 110 teenagers, what is the probability that their mean time for playing games is more than 8 hours per week?

  • statistics - , Wednesday, November 2, 2011 at 11:17pm

    You need some measure of variability to answer the question.

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