Thank you for everything, i’ve an exam in 2 hours and it’s not just that i was struggling with critical values that you’ve helped with. But the calming and soothing way of teaching is what made me at ease. Again thank you so much of this :)
@jewelminor55266 ай бұрын
You are able to make learning so stressless. Thank you.
@fabiolasilva66236 ай бұрын
I had never seen such an amazing explanatio , thank you so much!!!!!
@malvikapant76228 ай бұрын
crisp and clear. Thanks for the simplification
@pax_academy8 ай бұрын
Glad it was helpful!
@Shrutimmmmm4 ай бұрын
Thanksssss for such a crisp n clear explanation!!!
@pmicozzi2 ай бұрын
Bravo…please make more videos…you make the complicated easier to understand!!! TY
@joshuaguzman2023 ай бұрын
Ur insane this made it so clear unlike my lecturer who made it so convoluted
@keerthikas9992 сағат бұрын
thank you
@alanon25723 ай бұрын
Day before the exam and here I am
@Aryanm05033 ай бұрын
My exam is after 2hrs😂
@wardakashif24693 ай бұрын
3 hourse before the viva and I'm here😂
@nancykamau59158 ай бұрын
I got it now. What a nice tutorial
@Star_Handler8 ай бұрын
Great video! This really helped me understand my statistics homework so much better 🎉
@pax_academy8 ай бұрын
Glad it helped!
@BradleyWek2 ай бұрын
Thank you it's useful
@haifaelhassan243610 ай бұрын
Great to-the-point explanation 🙂Many thanks
@pax_academy10 ай бұрын
Thank you very much!
@echezonajasmine8747Ай бұрын
How did u get 0.01 in the rejection region and 0.025 in the rejection region
@kanakanakanakanameki20557 ай бұрын
Thank you so much i appreciate it. this is very easy to understand
@Joxora3 ай бұрын
Thank you sir. Well expantiated and understood😊
@yashgupta40993 ай бұрын
All doughs cleared Man ❤😊
@engelnkosi700228 күн бұрын
what if the mean is not given? how do i calculate?
@dorinalarionov67923 ай бұрын
Thank you It’s really helpful
@eynjel24 ай бұрын
Thankyou for clear explanation ❤
@matthew1028-n2i4 ай бұрын
Sorry, I have a question about the Z test. Why did you find the critical value depends on the standard deviation of 0.025 instead of 0.05? Is it about one tailed test and two tailed test? Thank you!
@happy_ritwika3 ай бұрын
When the Alternate Hypothesis is "not equal to" the population mean, then we use a two tailed distribution. In a z or t test for a two tailed distribution, we find the z score or a t score for "alpha/2" because the critical value lies on each side of the mean. So if the Confidence Level is 0.95, then the Level of Significance is 0.05. Then alpha/2 = 0.05/2 = 0.025. If the Alternate Hypothesis is a "less then" population mean kinda scenario, we use a left tailed distribution. Then the level of significance is not divided by 2. So it just remains alpha. And we calculate the z and t test for alpha. Hope this helps...
@joeycaunsag42453 ай бұрын
I'm confused, what if we are dealing with sample standard deviations yet the sample size is more than 30, what's the statistical test
@kiwifrenchie60362 ай бұрын
I think it’s just depending on if we know the population variation. If yes use Z if not use T
@aimanmari3496 ай бұрын
So helpful Thankyeww so muchhhhh❤️
@mansaproduct198210 ай бұрын
when calculating for the t-value, why is the degree of freedom not applicable (n-1)?
@pax_academy10 ай бұрын
Thank you for your question. I think what you're asking is why do we use the degrees of freedom when calculating the critical value and not the t-value. The reason we use degrees of freedom to find the critical value is because the t-distribution's shape changes depending on how large the sample size is. As the sample size increases (degrees of freedom increases), the certainty of the estimate increases which leads to less spread in the distribution.
@tanishpawaskar29809 ай бұрын
Thank you so much it really helped me
@pax_academy9 ай бұрын
I'm glad it helped!
@sarasultan17458 ай бұрын
You helped me a lot thanks
@pax_academy8 ай бұрын
No problem!
@sajanyerra10 ай бұрын
Hi! thank you for the very clear explanation. One question though, in the t-test we took 'Null Hypothesis as price = 2.45', can we also take it as 'price
@pax_academy10 ай бұрын
Absolutely, you can also choose to state the null hypothesis as
@sajanyerra10 ай бұрын
@@pax_academy thank yo very much, for responding :)
@chalseabito9626 ай бұрын
Thanks alot 🙏🏾🙏🏾but please what's that chart called
@selmaamar5326 ай бұрын
So helpful
@iraafzal52196 ай бұрын
Thank you so much ❤❤❤❤
@TamunokuroJohn-xb2tgАй бұрын
❤
@atheaautida48863 ай бұрын
thank you thanj u!!!!!!!!!
@elcinogretmen8 ай бұрын
Thanks a lot for sharing🎉❤
@pax_academy8 ай бұрын
My pleasure !
@raizaya10 ай бұрын
very helpful thank you
@pax_academy10 ай бұрын
Glad it was helpful!
@BSN4year3 ай бұрын
Unable to understand 😭😞😭😞
@a7med_kt89725 күн бұрын
Really? I found this one is really clear
@samsonisaac34769 ай бұрын
What test is used when n>30 but then pop. variance is know
@pax_academy9 ай бұрын
Thank you for your question. The test used when the sample size is higher than 30 or if the pop. variance is known is the z-test.
@SammykeyzMachaa9 ай бұрын
Great 👌
@pax_academy9 ай бұрын
Thank you!
@bangtri3479 ай бұрын
I have a question for the second problem, shouldn't we be using the value corresponding to df=24 and CI=99%? Why did you use the CI value within the 98% CI?
@readingeducationjourney9 ай бұрын
Because of the degree of freedom, i guess
@pax_academy9 ай бұрын
Bear in mind that this is a one-tail test, therefore our significance level is calculated from doing 1 - CL of 99% = 0.01. If it were a two-tail test we would find 0.005 (0.01/2). Hence, we use the degrees of freedom found (24) and our signif level of 0.01 to find a critical value of 2.49.
@bangtri3479 ай бұрын
@@pax_academy Oh okay, I understand now, thank you very much. Hope you continue making educational videos on Statistics!
@tehreemanwaar10 ай бұрын
informative video 😃
@pax_academy10 ай бұрын
Thank you!
@JavierBonillaC8 ай бұрын
8:28 we cannot reject the hypothesis that the value is 75. Alright. But I would have loved for you to involve the 95%. That means that you can be 95% sure that the age of women in the US is 75. Right?
@anuj88253 ай бұрын
I don't think 95 can be involved anymore. 95% would have been the confidence interval in case we rejected, which means that if we sample the population enough times, 95% of the times the mean of the ages will give you an answer which is NOT 75. The number 95 says nothing about the original average of 75 years The confidence interval is to support the rejection, but says nothing about confidence of the null hypothesis data
@user_elvis10 ай бұрын
Very comprehensive
@pax_academy10 ай бұрын
Thank you very much!
@user_elvis10 ай бұрын
Could you avail your concept on linear programming & break-even analysis thank you@@pax_academy
@alexmuriiki4878 ай бұрын
YOU ARE AGREAT TEACHER
@pax_academy8 ай бұрын
Thank you!
@travisr8210 ай бұрын
Life saver 😊
@pax_academy10 ай бұрын
Thank you! :)
@dananjayachathuranga711310 ай бұрын
thank u
@pax_academy10 ай бұрын
You're welcome!
@SherwinQueniones3 ай бұрын
Why 1.43 mine is 1.428
@krasnerjessica29679 ай бұрын
im new to stats...did you mean to write u-1 instead of n-1 fkr the degrees of freedom, or am I confused
@pax_academy9 ай бұрын
Excuse my hand-writing but I did indeed write n-1 although it looks like u-1 :) n stands for sample size. Thank you!
@MedManiac18 ай бұрын
great great great
@mazenalnassri74878 ай бұрын
First question sample sd is given not population sd, so should not we go for the t-test?
@pax_academy8 ай бұрын
Unfortunately no as the sample size is of greater importance. As n is higher than 30, we must use the t-test. Thank you for your question!