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

[@ak8746]

my goat got a skinfade chzzzzz

[@charlotteeh3472]

loving these videos, really saving my stats for tuesday !! will you be doing a video on standardising the normal distribution/ coding?

[@jackbobby2356]

he did it already

[@liamcoghlan5408]

Your videos have been very helpful to me, thank you Zeeshan.

[@meronalsakat2387]

if you were null hypothesis, I would accept you

[@ilsrzz135]

😭😭

[@tobymatthews9940]

Amazing video, really helpful

[@aneeeees]

Clutch before my stats exam loveeee

[@リオ利緒]

so when are you meant to convert the binomial distribution into the Y~N? like how do you know if you're meant to do that?

[@tyronecansick4009]

I'm guessing I you see the words approximation

[@adiditalian6902]

what's the difference between this topic of normal approximation and the binomial approximation?

[@yessssirrrrr2294]

Legend

[@mulkomkisitu3686]

Happy birthday Callum Edward brooks

[@ty-qo5ji]

Idk if this sounds dumb but how do you know to make the H0 and H1 with p and not mean. is it because the data in the first question is binomial.

[@sreenathbondilli8402]

just remember to make h0 and h1 with p and not mean when its normal approximation hypothesis testing, because reg hypothesis testing w binomials uses p not mean as well, only reg hypothesis testing w normal distribution is mean

[@pokeninjaful]

Why don't we use rt(variance)^2/mean of X for the standard deviation

[@karinac2541]

I think that’s for when there’s a sample with the normal distribution. This is just approximating from a binomial to normal distribution. I may be wrong though
Edit: looking back at this now that a levels are over I don’t understand anything I wrote 😂

[@voltaireisamadlad7007]

@@karinac2541 cheers mate I've been so confused by this

[@karinac2541]

@@voltaireisamadlad7007 no problem

[@belalmenisy5859]

@@karinac2541 No you are right

[@ashhad2675]

yes

[@liamcoghlan5408]

How do you know given the information in the questions that it is originally a binomial distribution?

[@joshjayden8200]

binomials have probabilities and n- if question says something like there is a 54% chance of phones to heat up and there are like 50 phones as the sample. n = 50 and p = 0.54

[@roonhaam]

🐐

[@Ameera_08]

so do we always take lower bound when we do the continuity correction?

[@saiykoz]

depends if it’s > or, > or equal to

[@リオ利緒]

@@saiykoz if its = to, do you have to change anything

[@Xela2632]

@@リオ利緒 yeah