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t interval

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Uploaded by on Mar 9, 2009

Describes the calculations to find the confidence interval when the population standard deviation is unknown.

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Education

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  • Wow !!!!!!!!!!! amazing thanks Professora ! (female teacher in Spanish. 

  • Great!!!!!!

  • This really helped me! Thank you!

  • What is the probability that you would do the next lecture in a bikini?

  • how do u get the t score????

  • Thank you sooooooooooo much !! it does indeed help.. I like the way you clairify things step by step.. hope to see more clips for you.

  • lovely

  • Thank you! This whole semester I've been so lost. This break-down makes it so much clearer to understand!

  • Why do you say you use this when you dont have the population std dev when you actually do have this and use this in the calculation

  • thanx was a great help!!

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