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One Sample t-Test

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Uploaded by on Aug 8, 2010

statisticslectures.com - where you can find free lectures, videos, and exercises, as well as get your questions answered on our forums!

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  • in this case,is it possible for us to use z-test if n>30 or should we stick to t-test?which 1 is better?

  • @joonkhs

    It is possible to use a z-test if you have a sufficiently large sample (most textbooks say n>30), yes. "Better" really depends on several different factors, such as sample size and distribution.

Top Comments

  • I Love You. 2 semesters and 3 lecturers couldn't provide me with an understanding of this, and you did it in 4.49 minutes.

  • Great review buddy, You realy understand and can teach this subject,It can't be taught easily abd clearer than that.

    God bless you as you simplify this confusing subject and share it with folks in real need.

    Rich

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  • amazing!!!!! thanks a lot!! really appreciate it!

  • @statslectures thanks !! you're so efficient

  • much love. thanks

  • Thanks a lot!

  • wonderful, wonderful, I can't thank you enough!!

    

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