@usakumachan2493

Thank you so much for making these amazing videos that are saving my life.

@TokyoWong

This may be also useful with some more exercise

@balrajsinghbhatia2988

Please tell me about Z test and T-test ??

@christinakoukoulitaki4666

Where can we find exam questions to practise, since the curriculum is new?

@garyharold3991

is the Next HL available anywhere? im so screwed for my test.

@taarinip

where is the video for the HL students? The further hypothesis testing one.

@amratashbaghel6628

what about the z test?

@moment-fr

lad