SOLUTION: I am having so much trouble resolving this problem. I understand the first part but I cannot figure out the rest. Twelve different video games showing substances ..... Use the dat

Algebra ->  Probability-and-statistics -> SOLUTION: I am having so much trouble resolving this problem. I understand the first part but I cannot figure out the rest. Twelve different video games showing substances ..... Use the dat      Log On


   



Question 975592: I am having so much trouble resolving this problem. I understand the first part but I cannot figure out the rest.
Twelve different video games showing substances ..... Use the data to construct a 95% confidence interval of u , the mean duration of the game.
4043 3879 3863 4027 4322 4818 4650 4038 5011 4832 4341 4311

Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
From your samples,
mu=4344.6
s=397.2
Since there are only 12 samples compute the t statistic using the critical t value for 95% and 11 dof.
t%5Bc%5D=2.201
So then,
E=2.201%2A%28397.2%2Fsqrt%2812%29%29
E=252.3
So then the interval is,
(4344.6-252.3,4344.6%2B252.3)
(4092.3,4596.9)