Stats: Hypothesis Testing using Critical Value Example 

You may not have a million subscribers and you may not make profit by making these videos... But I want to thank you, you are brilliant teacher and quite possibly have saved me from failing. God bless you!

U made it very clear to understand after watching dozens that didn’t. Thank you!

I never comment on videos but you literally saved my life. THANK YOU SO MUCH!

THANK YOU!!!!! I think you just saved my midterm mark! Fantastic video, the calculator "trick" will REALLY help me. :)

I used to get stuck when finding critical values, but all thanks to you sir for clearing my doubts today. i have understood everything may GOD richly bless you sir.

Great video. Clear explanation. I would just elaborate on the step 4, instead of using the calculator. Great Video

Thank you so much. I was confused about two concepts: test statistic, and critical value. Now I understood. Thanks!!!!

Thank you very much for your explanations! they are the best I've ever heard!))

You have given me hope to pass my course. Thanks

You're great! Thank you for your help!

My stats prof speaks broken english. Thank you.

I came here to find negative critical value without the use of calculators but learned many things.

Really easy to understand the way you explained it..,, thanks mate

I wish you were my stats professor. Thank you!

Thank you for your work!! It was helpful

: It is crucial that the variance of a production process be less than or equal to 25. A sample of 22 is taken. The sample variance equaled 26. a. Construct a 90% confidence interval for the population variance. b. Construct a 90% confidence interval for the population standard deviation. c. State the null and alternative hypotheses to be tested. d. Compute the test statistic. e. The null hypothesis is to be tested at the 10% level of significance. Using the critical value approach, state the decision rule for the test. f. What do you conclude about the population variance?

Excellent..Thank you so much!

Ty for sharing information and time to explain what a college professor is being to do but is failing their job horribly.

Thanks a lot!!!

thank god i found this video

What if the companies claim is less than a figure and not equal,how do you show the Ho?

PLEASE USE A TABLE INSTEAD OF CALCULATOR. not everyone has that type of calculator

how did you get the critical values? What table do I look at?

Hi, I like you explanation but I am a little confused with how you derived the critical value -1.64. Since this is a left tail test with alpha .05, shouldn't the Z critical value be -1.96 (95%) instead?

How do you do step 4 without the calculator?

I'm here because my teacher was lazy as hell and I am now super fucking confused.

may allah bless you

why are you using a claculator find the critical value instead of explaining it