hypothesis testing of difference between two mean large sample when to use z-test part 4
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- Опубліковано 15 вер 2024
- In this video you will learn about hypothesis testing of difference between two mean large sample when to use z-test
#testingofhypothesis #ztest
when to use z-test in hypothesis testing or test of significance for large sample when sample size is greater than or equal to 30.
test of significance of difference between mean of two sample large sample z test
After watching full video you will learn
1. When to use z test
2. how to understand questions related to z test
3. how to decide whether test is one tailed or two tailed
4. how to accept or reject null hypothesis.
we have givrn a method and solved numericals on above topic,
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Z-test of significe of difference between two means
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Sir , ur examples are always perfect as per the concept... Makes understanding vry easy... Thankyou for this video 😊
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Also same question is there in my exam Thank You Very Much Sir 🙏🙏🌟🙏🙏
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Excellent ! Very nice explanation 👍
Best video on UA-cam 👏🙏
Your explanation is extremely easy and helpful for me, after watching your video my concept on hypothesis testing is crystal clear.Thanks a zillion for such video,Love from Bangladesh ❣️
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Awesome sir..
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Sir please provide the videos of test of significance of attributes..and your teaching style is so helpful ..thanks a lot
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I Understand your teaching very Easily Sir
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Very excellently explained in all videos
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Your explanation is extremely easy and helpful for me 💓 thanks allot
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Thank you so much sir for making this tough topic easy for us through such a grt explanatory videos.
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Sir ut classes are superb... I'm enjoying statistics
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Very nicely explained , I'd many confusion .. all are clear now
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Very important topic covered by sir.. Thanks a lot sir
Most welcome
Student t distribution and when to use t test and z test
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Very much grateful for your efforts sir...your lectures are so easy to understood such a hard topic Thank you sm 💗✌
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Nice Content
Lovely day with your lecture sir.
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Amazing explanation sir.....
but..In one book i have seen the formula of Z test was different.
z = (X1 bar - X2 bar) - ( Mu1- Mu2)
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delta √1/n1 + 1/n2
So, I am confused that mu1-mu2 has any importance in this formula ?
That will be zero so no problem
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explained Very well sir.
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@@GouravManjrekar I love it. I completed the series testing of hypothesis. I have learned a lot from you. thank you so much brother.
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Sir ur vedios are very helpful 🙂🙂thanku sir🙏🙏... Would you please make a vedio on test of hypothesis concerning one proportion and different proportions on large samples sir...
VERY VERY GOOD, LOTS OF LOVE TO YOU SIR, THANK YOU
Quite helpful... thanks Sir
Happy to help
thank you sir
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Thanks 👍
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Sir, I have a doubt. When we use Z test -don't we need to find the final value of "z" using Normal distribution table(Z-table)?
We are taking many sample from same population and it form sampling distribution of mean and We standardize using standard normal distribution
Thanks
At 23:54 the value of Z alpha is 0.516 not 5.16
So it is accepted not rejected.
0.516
No buddy.. The value of z alpha is according to table which is 1.96 and calculated z is 5.16
i.e 5.16 >.96
So we reject Ho (Null hypothesis)
May you understand....😊
Sir in the last question the null hypothesis will be accepted know because it is -5.16 which is smaller than 1.96
Sir in this first eg. you took null hypothesis as their is no significant difference, but we can even take it as H0 = their is a significant difference.
If done so then results would be different. Then how to deal with this??
Sir kindly make a video on Gaussian distribution and error in measurements and their effect on data set
Very helpful sir
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Again thank u sir... In question no 2...under null hypothesis, can't we write sigma1 = sigma 2, rather than mu1=mu2..
is there any playlist for the all the hypothesis testing videos?
Yes
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Hello Sir, Can You Also Make a Lecture On Central Limit Theorem and Also If You Can Make A Video On How To Find Out Variables in These Questions Like Sometime it's very difficult to find out if the Deviation is of Population or From the Mean.
sure
f test numerical video link ua-cam.com/video/nfbExOGWAS0/v-deo.html
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Sir how we said......in question no 1.... it is sample's standard deviation *not population's standard deviation...*
Sir what if one sample is less than 30 and other is more than 30 , then which test to apply in such case ?
Please Suggest best book for hypothesis testing
Jl devore
Plz sir short video banaya kara
god bless you sir
Please brief the steps to calculate the critical value of Z. If significance level is 2%.
See standard normal distribution table value at 2% LOS.
Hope this will help you...
Hi sir, can u please explain how did u calculate critical value z alpha?
Salute
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A survey found that the average hotel room rate in Luzon is ₱2,400 and the average room rate in Mindanao is ₱2,200. Assume that the data were obtained from two samples of 75 hotels in Luzon and 80 hotels in Mindanao and the standard deviations were ₱250 and ₱215, respectively. At , can it be concluded that there is a significant difference in the rates?
Can you helpme with this sample. Thanks 😊
Sir agr hame critical value n yad rhe to question m given rhega n??
It may be
Critcll valve ? Huw com 2.84?
Please tell.
When to use two tail and one tail.
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can we write x1 =x2 in null hypothesis assumption in place of mu1 =mu2
Thanku sir
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Sir plz populations proportion pe bhi ek video bna do plz sir
Sure
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Sir what is Degree of Freedom?? Can u plz explain
Number of independent variate in observation is called degree of freedom.
any example of left tailed test ?
Please use a dark marker
sie exam se mai to diagram nahi banenge na?
Unless not asked.
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why first video is not visible???
Now check
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Sir ap ki uplode ki hai videos ki awaz bhtt kam hai,🥺
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If significance value will be not given then.....
You need to assume 5% Level of significance and need to remember value.
Check my first video on Hypothesis testing full Concept
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Thank you sir
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