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Student's T Distribution - Confidence Intervals & Margin of Error

The Organic Chemistry Tutor
2019 ж. 27 Қаз.
529 018 Рет қаралды
Жүктеу

This statistics video tutorial provides a basic introduction into the student's t-distribution. It explains how to construct confidence intervals around a population mean using the student's t-distribution as well as calculating the margin of error or error bound of the mean. It's a good indication to use the t-distribution as opposed to the normal distribution when the sample size is less than 30 and when you're given the sample standard deviation instead of the population standard deviation.
Introduction to Statistics:
• Introduction to Statis...
Introduction to Probability:
• Introduction to Probab...
Central Limit Theorem:
• Central Limit Theorem ...
Standard Error of The Mean:
• Standard Error of the ...
_____________________________________
Confidence Intervals & Margin of Error:
• How To Find The Z Scor...
Find The Z-Score Given Confidence Interval:
• How To Find The Z Scor...
How To Calculate The Sample Size:
• How To Calculate The S...
Student's T-Distribution:
• Student's T Distributi...
Confidence Interval-Population Proportion:
• Finding The Confidence...
Chebyshev's Theorem:
• Chebyshev's Theorem
_____________________________________
Hypothesis Testing - Null & Alternative:
• Hypothesis Testing - N...
Type I and Type II Errors:
• How To Identify Type I...
One Tailed and Two Tailed Tests:
• One Tailed and Two Tai...
Test Static For Means & Pop Proportions:
• Test Statistic For Mea...
Hypothesis Testing Problems:
• Hypothesis Testing Pro...
____________________________________
Final Exams and Video Playlists:
www.video-tutor.net/
Full-Length Videos and Worksheets:
/ collections

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    @gelverjeffcantal250@gelverjeffcantal250 Жыл бұрын

  • it's very interesting for everyone who wants to add value to the t-value and z-value both are really confusing.

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    @Ahmed-fq6si@Ahmed-fq6si3 жыл бұрын

  • Is it correct to say that regardless if the test to be employed is a 1-or 2-tailed test, the EBM will always employ alpha/2 in determining the value to be located on the t-table?

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    @hamzazouari6799@hamzazouari67994 ай бұрын

  • sir the t table i have is quite different from the one you are using and because of this our t values are totally different .how is this the case for me the t value for discrete valued question 'the second one' is 14.684

    @vikalpparashar7898@vikalpparashar78984 жыл бұрын

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  • I calc numerous times. How did you get s=11.709?? I used your method and my number everytime was much larger than that

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  • Thanks 😇

    @channadissanayaka6450@channadissanayaka64508 күн бұрын

  • What if the only given is the confidence interval and sample mean but they are asking for the value of t?

    @denisecamillenarag3789@denisecamillenarag37894 жыл бұрын

  • thanks

    @yhaiji@yhaiji11 ай бұрын

  • How can we decide to use whether alpha or alpha/2 ?

    @volkanulker6432@volkanulker64323 жыл бұрын

  • Our teacher used population variance and t distribution how will i solve the point estimate of u (meu)?

    @erica7316@erica73162 жыл бұрын

  • For the chem class ex... you calculated the sd for population and not the sample of 10 ... ?

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    @shashank763@shashank7633 жыл бұрын

  • Hi kindly help me with the null hypothesis of this Given that an average IQ of adult population in an area was 100. Five adults were then randomly selected and tested. The test scores were; 69, 79, 89, 99, 109 with standard deviation of 15.81. Is there a strong reason to believe that the mean IQ scores lies below 100.

    @nansubugaangella9934@nansubugaangella99345 ай бұрын

  • When you divide alpha in 2, isn't that a two tailed test? Why do you say that this is a one tailed test?

    @maryamhagopian2754@maryamhagopian27543 жыл бұрын

    • You're right, if you overlook that error it works out

      @bobu5213@bobu52133 жыл бұрын

    • yes exactly

      @shreya446@shreya4463 жыл бұрын

    • No man, two tail test is basically for hypothesis testing when we assume that the man is not equal to any value i.e., it can be less, or more

      @Sunny-xw5rx@Sunny-xw5rx2 жыл бұрын

  • I don't know why teachers are paid those salaries to make things more horrible which otherwise can be explained this simpler way. Thanks God for saving me 🙏

    @user-kilrilirrlri@user-kilrilirrlri Жыл бұрын

  • Hey mate, I've got a question: In the ''C'' section of the 2nd example, why we aren't using [values corresponding to z=(.95), from there we can use mean and the standart deviation values (which we already know) to find the values we need.] Is it because in this examples; the graph, isn't standart norman distribution.

    @cornerbloke8861@cornerbloke88612 жыл бұрын

  • Why did you use 0.05 as ur @/2 value instead of 0.025 in the second Question?

    @user-qx7iw1pb1y@user-qx7iw1pb1y3 ай бұрын
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