S1 Discrete Random Variables Help - 8c, 3a) c)
The random variable T has mean 20 and standard deviation 5. It is required to scale T using the transformation S=aT+b, where a and b are constants (a>0), so that E(S) and Var(S) satisfy specified values. Find the values of a and b in each of the following cases: E(S) = 0 and Var(S) = 1, E(S) = 50 and Var(S) = 100
I've seen this question posted before but I'm really struggling with this topic and need a bit more detail on how to answer this sort of question.
Thanks to anyone that can help (and a credit to you if you understand what's going on!)
I've seen this question posted before but I'm really struggling with this topic and need a bit more detail on how to answer this sort of question.
Thanks to anyone that can help (and a credit to you if you understand what's going on!)
(edited 7 years ago)
Sorry you've not had any responses about this. 
Are you sure you've posted in the right place? 
Here's a link to our subject forum which should help get you more responses if you post there. 
Just quoting in Danny Dorito so she can move the thread if needed
Are you sure you've posted in the right place? Here's a link to our subject forum which should help get you more responses if you post there. Just quoting in Danny Dorito so she can move the thread if needed
Spoiler
Original post by TSR Jessica
Sorry you've not had any responses about this. Are you sure you've posted in the right place? Here's a link to our subject forum which should help get you more responses if you post there.
Just quoting in Danny Dorito so she can move the thread if needed
Are you sure you've posted in the right place? Here's a link to our subject forum which should help get you more responses if you post there. Just quoting in Danny Dorito so she can move the thread if needed
Spoiler
Yeah thankyou! Should've put it in a Maths forum but I guess I missed it.
Quick Reply
Related discussions
- As maths
- AS Level stats help!!
- S1 random varibable help!!!!!!!
- Binomial distribution
- a level maths hypothesis testing q
- Further Maths statistics question
- Geometric and binomial
- Discrete probability disturbution
- OCR A Level Further Mathematics MEI Statistics Minor Y432/01-16 Jun 2023 [Exam Chat]
- A level probability maths
- Anyone know where to find the 2023 AS Edexcel Further Maths papers?
- Edexcel A-level Statistics Paper 2 (9ST0 02) - 12th June 2023 [Exam Chat]
- Student Accomodation to Let
- 2nd Alevel RETAKE ...
- Applied Science Unit 3 investigation skills
- Help urgent stats
- how to do this probability cowboy hat problem?
- People who do Computer Science in Uni: How much mathematics do you do?
- Discrete Further Maths: Simplex Algorithm
- S1 June 2005 Probability
Latest
Trending
Last reply 2 weeks ago
Unofficial Mark scheme: AQA GCSE Biology Paper 1 Triple Higher Tier 16th May 2023Last reply 1 month ago
AQA A Level Business Paper 3 (7132/3) - 14th June 2023 [Exam Chat]Last reply 1 month ago
AQA A-level Psychology Paper 2 (7182/2) - 25th May 2023 [Exam Chat]Last reply 1 month ago
AQA A-level Physics Paper 2 (7408/2) - 9th June 2023 [Exam Chat]Last reply 1 month ago
Edexcel A Level Mathematics Paper 1 (9MA0 01) - 6th June 2023 [Exam Chat]Maths Exams
2960
Last reply 2 months ago
Edexcel A-level Mathematics Paper 1 [6th June 2023] Unofficial MarkschemeMaths Exams
156
Trending
Last reply 2 weeks ago
Unofficial Mark scheme: AQA GCSE Biology Paper 1 Triple Higher Tier 16th May 2023Last reply 1 month ago
AQA A Level Business Paper 3 (7132/3) - 14th June 2023 [Exam Chat]Last reply 1 month ago
AQA A-level Psychology Paper 2 (7182/2) - 25th May 2023 [Exam Chat]Last reply 1 month ago
AQA A-level Physics Paper 2 (7408/2) - 9th June 2023 [Exam Chat]Last reply 1 month ago
Edexcel A Level Mathematics Paper 1 (9MA0 01) - 6th June 2023 [Exam Chat]Maths Exams
2960
Last reply 2 months ago
Edexcel A-level Mathematics Paper 1 [6th June 2023] Unofficial MarkschemeMaths Exams
156
