Paper 2 - Pure & Stats Flashcards
1
Q
State any assumptions needed for the binomial distribution model to be valid
A
- (arrival of each parcel are) independent event (must be in context)
- only success or failure is possible
- p is constant (for all seeds) (must be in context)
- sample size must be known
2
Q
What to remember for binomial distribution Qs
A
- where p = chance of success of
OR - where p = the probability of …
- x is the no. of
REM TO USE A DIFFERENT CONSTANT IF WE HAVE DONE 2 BINOMIAL DISTRIBUTION CALCULATIONS IN SAME QUESTION
ie X ~ B (n,p)
Then Y ~ B (n,p)
3
Q
Hypothesis testing assumptions
A
Sample is random
