1. 

   jaffar New Member

   30 people are selected randomly from a certain town. If their mean age is 60.5 and σ = 4.6, find a
   95% confidence interval for the true mean age, μ, of everyone in the town.

    

   jaffar, Nov 10, 2016

   #1
   
   
2. 

   math_celebrity Administrator Staff Member

   Assume a small sample t-test since sample size is 30 or less:
   
   http://www.mathcelebrity.com/normconf.php?n=30&xbar=60.5&stdev=4.6&conf=95&rdig=4&pl=Small+Sample

    

   math_celebrity, Nov 10, 2016

   #2
   
   

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