Edexcel A Level Maths: 3.7 Hypothesis Testing with the Normal Distribution

[@BilalOzturk-vb5fl]

I am a maths teacher to try to learn A level content. There are a few topics that I could not master it. Thanks to you that your explaination is amazing. I got it, I loved it, liked it, and subscribed.

[@neuropcs5879]

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[@sweetmaths4213]

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[@rohitchudasama5431]

Best teacher itw✅

[@duahcarr8759]

you're so helpful OMG!!!!!

[@ak8746]

Ur vids help a lot ur very gd at explaining

[@theairbornemuffin7111]

thank you very much for this

[@louisashcroft9034]

great video man!

[@loislovescheese4776]

bloody brilliant boss man

[@yuuzh]

oo i need help on this, perfect

[@matei919]

when writing the probability why do you use the mean 124.2 instead of 125? why is it you use that mean?

[@salmaelagamy9753]

I think you have made a mistake when going on the two tailed test or maybe things have changed but now you need to standardise your distribution when finding the lower and upper critical values to get the marks

[@jamsi1066]

what does this mean ?

[@iqraali4968]

you are not that guy answer her question..

[@milankandasamy9808]

Can I use the critical region method for a question like number 1 with the windspeed (knots), eg find critical region and then if the mean from the sample lies in the critical region, then reject null hypothesis? eg the critical region for that question is values greater than 10.715, as 12.2 (the sample mean) lies in that region, reject null hypothesis

[@moosachoudhury9679]

you can do either method if it doesn't specify but in some questions it asks you to do a particular method so it might be helpful to make sure you can do both :)

[@evanpoole7829]

i don't see why not

[@evanpoole7829]

​@moosachoudhury96can you tell me a question where they've done this?

[@Luka_c123]

didnt really explain how to know which of the 2 means we have to use but ok

[@theairbornemuffin7111]

i just accept it for what it is