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For Q9 iii. the question asks to find the probability of the total mass being less than 530 with 10 randomly selected plums. Wouldn't finding the probabilty that the mean is less than 53 be different from the sum adding to 530, since the actual mean is 55 and so getting 54 and 52 (to average to 53) be different from finding the mean being 53 as 52&54 aren't equally likely to occur due to the shape of the bell curve. idk my question makes senses, sorry for the horrible wording.
I understand what you are saying but we are finding the probability that the sample mean is less than 53, which if it is then the total weight is definitely under 530
@@dominic4051 don't worry found it, it says on the point of sliding, which means not sliding but about to so in equilibrium, it also means friction is at its maximum rather than just limiting, hope this helps
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thsi was actually really helpful, W mans
If this video helped you out, I would appreciate it if you hit like and subscribe. If you are feeling extra generous you could send me a coffee via super thanks button ☕ thanks for watching 🔥
The video title feels so personal after the paper 2 I had 😅. Cheers!
No personal attack here
At 8:40 the question says show that lamda must be less than 0.5 but you showed that it must be greater?
You are right! I got the original inequality the wrong way round
bro ur the goat fr
It ain’t much, but It’s honest work
@@DrJamesMaths love that
Excellent 🎉
For Q9 iii. the question asks to find the probability of the total mass being less than 530 with 10 randomly selected plums. Wouldn't finding the probabilty that the mean is less than 53 be different from the sum adding to 530, since the actual mean is 55 and so getting 54 and 52 (to average to 53) be different from finding the mean being 53 as 52&54 aren't equally likely to occur due to the shape of the bell curve. idk my question makes senses, sorry for the horrible wording.
I understand what you are saying but we are finding the probability that the sample mean is less than 53, which if it is then the total weight is definitely under 530
for the slope question how do you know its in equilibrium and that T=lambda.mg
@@dominic4051 can you time stamp it?
@@dominic4051 don't worry found it, it says on the point of sliding, which means not sliding but about to so in equilibrium, it also means friction is at its maximum rather than just limiting, hope this helps
You should add timestamps for future videos thank you
I do normally, didn't see the point in this video as it was so short, wasnt sure how to split it
@@DrJamesMaths No worries. Great video regardless :)
Should u not have rooted the 10 on the normal question
I divided by 10 then rooted it
beat me to it ☠ my bad
No worries! Didn't take me long, hope you hadn't spent any time on yours
for Q9ii why did you do less than 53 when it says less than 530
We are testing if the sample mean is less than 53 which is the same as the total weight being less than 530