Central Limit Theorem Accelerated Math 3.

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Presentation transcript:

Central Limit Theorem Accelerated Math 3

Central Limit Theorem: For a large “n” the sampling distribution of is approximately normal for any population with finite standard deviation . http://www.statisticalengineering.com/central_limit_theorem.htm http://www.intuitor.com/statistics/CentralLim.html

To find the probability - 1st find the Z-Score: Then do what we have been doing… normcdf(lower, upper)

The only example.  Assume that the weights of paper discarded each week by households are normally distributed with a mean of 9.43 lb. and a standard deviation of 4.17 lb. Find the probability that 12 randomly selected households have a mean between 10.0 lb. and 12.0 lb.

Oh wait! Would you like to learn how to do this completely on your calculator? 