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logistic_guy
replied to the thread
temperature and oven
.
🏃♀️🏃♀️ \mu_3 = \frac{188 + 196 + 195.5 + 212.5}{4} = 198
Oct 8, 2025
J
jimi
replied to the thread
Standard deviation help needed
.
Thank you for replying. I think I understand what you're getting at. Are we to assume that the population is normally distributed? If...
Oct 8, 2025
Dr.Peterson
replied to the thread
Standard deviation help needed
.
We also aren't told how big the samples are. But we can still think about whether the standard deviation of sample means will be...
Oct 8, 2025
logistic_guy
replied to the thread
Euler function
.
\textcolor{indigo}{\bold{FINALLY}}😭😭 \varphi(30) = \varphi(2 \times 3 \times 5) = \varphi(2)\varphi(3)\varphi(5) = 2^0(2 - 1)3^0(3 -...
Oct 8, 2025
K
khansaheb
replied to the thread
Work Done query
.
Because during the first day of class of "mechanics of materials", while discussing vector dot-product a similar problem was introduced...
Oct 8, 2025
J
jimi
posted the thread
Standard deviation help needed
in
Probability / Statistics
.
Hi all, This is a question from a UK GCSE Statistics paper (June 2024) 'Faiza owns a factory that makes footballs. The production line...
Oct 8, 2025
logistic_guy
replied to the thread
puzzle - 2
.
\textcolor{darkred}{\bold{MINIMAL}} \longrightarrow \textcolor{red}{\bold{Least}} \huge\textcolor{indigo}{\bold{the \ solution \ so \...
Oct 8, 2025
A
apple2357
reacted to
The Highlander's post
in the thread
Work Done query
with
Like
.
Hmmm, you don't appear to have understood what I've been trying to explain... ☹️🤷♂️ "the work done by the tension" cannot be...
Oct 8, 2025
The Highlander
replied to the thread
Work Done query
.
Hmmm, you don't appear to have understood what I've been trying to explain... ☹️🤷♂️ "the work done by the tension" cannot be...
Oct 8, 2025
logistic_guy
replied to the thread
Euler function
.
8-)😎 \varphi(29) = 29^0(29 - 1) = \textcolor{red}{\bold{28}}
Oct 8, 2025
A
apple2357
replied to the thread
Work Done query
.
Musing over.... I think if the question asked something like... Find the work done by the tension Or Find the work done by each of...
Oct 8, 2025
The Highlander
replied to the thread
Work Done query
.
@khansaheb, Not sure why you have introduced this. I don't see how it can help to achieve the desired result. 🤔 (KISS 😉)
Oct 8, 2025
The Highlander
replied to the thread
Work Done query
.
All the Forces involved are, as you recognize, Vector quantities but the Work done (and, indeed, any Work, ie: Energy) is a Scalar...
Oct 8, 2025
A
apple2357
replied to the thread
Work Done query
.
I was helping a friends son with his maths and i haven't studied too much mechanics and i realised i didn't understand it fully. I was...
Oct 7, 2025
K
khansaheb
replied to the thread
Work Done query
.
So this is a "random" problem from a "maths" book - not related to instruction. Can please tell me what attracted you to this problem?
Oct 7, 2025
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