This is weird. On the Casio FX 9750Giii it has a different input screen. There is no lower and upper bound option. You have X:Numtrial:P:Save Res:Execute. So this problem is not workable on my Casio based on the screen you have here. Casio prides itself on all their graphing calculators having the same keystrokes for the same problem. However, here they fail. I redid this several times to make sure I hadn't made a mistake.
Hi, thank you for all the brilliant videos. Can you help me with the following question? A study shows that 0.9% of a population of over 4,000,000 carries a virus. Find the smallest sample from the population so that the probability of the sample having no carriers is less than 0.4. This is an example in the oxford textbook. I am really struggling to apply these steps with this question. Thank you.
@@melvinfernandes4352 X refers to the discrete random variable. B is a reference that the distribution being Binomial. P means probability and is followed by a bracket (parenthesis ) describing the event you want the probability for. Bpd is Binomial Probability Distribution which refers to individual values for X, Bcd is Binomial Cumulative Distribution which refers to probabilities up to and including the value of X.
Clear and concise!👍 Thank you. Please could you explain the InvB (Inverse Binomial) again? I’m currently in Yr12 doing A Level Maths Edexcel. My teacher is using the Classwiz but I have the fx-CG50 so I’ve had to come here for help😅
+Lesser Spotted Mugwump - Really? It seems to cover all the built-in functionality fairly well, apart from the Python mode where some familiarity with Python is assumed. (Also, the Python mode is a bit limited at the moment in what it can do, but I digress.) If you think the Casio fx-CG50 manual is bad, you should take a look at the abysmal effort that went in to the TI-Nspire manuals, which are basically a "Getting Started" guide plus a function reference arranged alphabetically.
@@TheCalculatorGuide Could you please help me do this question of CG50 if it isn't too much of an ask. To withdraw money from a cash machine, the user has to enter a 4 digit PIN.But a survey found 10% of cash machine users use PIN '1234' 16 cash machine users are selected at random Find the probability that exactly 3 of them use 1234 as their PIN Thanks
Your distribution is X ~ B(16,0.1) Go to 2:STAT, then DIST, BINOMIAL , Bpd , F2 for Var. Data: Variable x = 3 Numtrial 16 p = 0.1 Press EXE. Should give the result. Hopefully you can see where all the figures have come from
![Calculator Tips & Tricks for A-Level Maths/Further Maths ➕➖➗✖️ [fx-CG50 Graphics, fx-991EX Classwiz]](/img/n.gif)
This topic of statistics was incredibly confusing to me, but this one video has helped me understand completely! Thank you so much :)
Thank you so much!!!!
But I need more videos like this please. Cg50 for the win
This is weird. On the Casio FX 9750Giii it has a different input screen. There is no lower and upper bound option. You have X:Numtrial:P:Save Res:Execute. So this problem is not workable on my Casio based on the screen you have here. Casio prides itself on all their graphing calculators having the same keystrokes for the same problem. However, here they fail. I redid this several times to make sure I hadn't made a mistake.
Yes I had noticed the same recently when doing this with a group of students.
Thanks for sharing
can you store number on cg50 in stats mode?
Hi, thank you for all the brilliant videos. Can you help me with the following question?
A study shows that 0.9% of a population of over 4,000,000 carries a virus. Find the smallest sample from the population so that the probability of the sample having no carriers is less than 0.4.
This is an example in the oxford textbook. I am really struggling to apply these steps with this question. Thank you.
could you do a video on how to do one and two tailed tests please on the cg50. Many thanks
I will put that on the todo list.
@@TheCalculatorGuide when will the video be out
@@melvinfernandes4352 I will see if I can get this done this weekend. One and Two Tailed with Binomial??
@@TheCalculatorGuide yes Binomal distribution and what the X and B and all the letters mean
@@melvinfernandes4352 X refers to the discrete random variable. B is a reference that the distribution being Binomial. P means probability and is followed by a bracket (parenthesis ) describing the event you want the probability for. Bpd is Binomial Probability Distribution which refers to individual values for X, Bcd is Binomial Cumulative Distribution which refers to probabilities up to and including the value of X.
how do you store answers when doing these questions?
It’s stored in the ans button because it’s the most recent answer
Thanks very helpful :)
Clear and concise!👍
Thank you. Please could you explain the InvB (Inverse Binomial) again?
I’m currently in Yr12 doing A Level Maths Edexcel. My teacher is using the Classwiz but I have the fx-CG50 so I’ve had to come here for help😅
I will look into that when I can
@@TheCalculatorGuide
Thank you!
I’m studying statistics 201 do u have a page only for 201 coz there is so many videos I’m confused
THANKYOU!!!!!
Yay, at last.
I’ve got both the ClassWizz and the cg50 for Alevel maths.
The cg 50 instruction manual is worse than awful.
+Lesser Spotted Mugwump - Really? It seems to cover all the built-in functionality fairly well, apart from the Python mode where some familiarity with Python is assumed. (Also, the Python mode is a bit limited at the moment in what it can do, but I digress.) If you think the Casio fx-CG50 manual is bad, you should take a look at the abysmal effort that went in to the TI-Nspire manuals, which are basically a "Getting Started" guide plus a function reference arranged alphabetically.
Ian Abbott It’s just not very good unless you read all 600 pages. It’s too scattered.
@@mrmagoo-i2l The point of any manual is that you're meant to read all of it lmao
just used this while playing fire emblem to figure out how rng blessed i am with character growth rates lol
thank u!!
Is it possible to find p(x=3) on CG50
If you mean can you find out individual probabilities then yes. You need to choose Binomial PD from the menu
@@TheCalculatorGuide Could you please help me do this question of CG50 if it isn't too much of an ask.
To withdraw money from a cash machine, the user has to enter a 4 digit PIN.But a survey found 10% of cash machine users use PIN '1234'
16 cash machine users are selected at random
Find the probability that exactly 3 of them use 1234 as their PIN
Thanks
Your distribution is X ~ B(16,0.1)
Go to 2:STAT, then DIST, BINOMIAL , Bpd , F2 for Var.
Data: Variable
x = 3
Numtrial 16
p = 0.1
Press EXE. Should give the result. Hopefully you can see where all the figures have come from