Salam Academy
Sign inCreate account
Practise

Question bank

Original exam-style questions, mapped to your syllabus. Answers are checked for mathematical equivalence and every attempt updates your mastery.

Sign in to check answers. Your attempts build your mastery and error book.

12 questions

SA-9709-P6-PO-0012 marksL1 FoundationCalculatorProbabilities
X∼Po(3)X\sim\text{Po}(3). Find P(X≤2)P(X\le2), correct to 3 significant figures.

Sign in or create a free account to check answers, get hints and track your progress.

Salam Academy Original Practice · Proposed mark scheme
SA-9709-P6-PO-0082 marksL1 FoundationCalculatorProbabilities
A Poisson variable has variance 55. Find P(X=0)P(X=0), correct to 3 significant figures.

Sign in or create a free account to check answers, get hints and track your progress.

Salam Academy Original Practice · Proposed mark scheme
SA-9709-P6-PO-0091 markL1 FoundationCalculatorConditions
A Poisson model is suitable when events occur
Choose one option

Sign in or create a free account to check answers, get hints and track your progress.

Salam Academy Original Practice · Proposed mark scheme
SA-9709-P6-PO1-0011 markL1 FoundationCalculatorProbabilities
X∼Po(2)X\sim\text{Po}(2). Find P(X=0)P(X=0), correct to 3 significant figures.

Sign in or create a free account to check answers, get hints and track your progress.

Salam Academy Original Practice · Proposed mark scheme
SA-9709-P6-PO1-0041 markL1 FoundationCalculatorConditions
Which of these is most likely to be well modelled by a Poisson distribution?
Choose one option

Sign in or create a free account to check answers, get hints and track your progress.

Salam Academy Original Practice · Proposed mark scheme
SA-9709-P6-PO1-0051 markL1 FoundationCalculatorConditions
Counts of cars passing a point per minute have mean 3.23.2 and variance 8.98.9. What does this suggest about a Poisson model?
Choose one option

Sign in or create a free account to check answers, get hints and track your progress.

Salam Academy Original Practice · Proposed mark scheme
SA-9709-P6-PO-G012 marksL1 FoundationCalculatorProbabilities
X∼Po(3)X\sim\text{Po}(3). Find P(X=2)P(X=2), correct to 3 significant figures.

Sign in or create a free account to check answers, get hints and track your progress.

Salam Academy Original Practice · Proposed mark scheme
SA-9709-P6-PO-Q011 markL1 FoundationCalculatorProbabilities
For X∼Po(λ)X\sim\text{Po}(\lambda), Var(X)\text{Var}(X) is
Choose one option

Sign in or create a free account to check answers, get hints and track your progress.

Salam Academy Original Practice · Proposed mark scheme
SA-9709-P6-PO-0023 marksL2 StandardCalculatorProbabilities
X∼Po(2.5)X\sim\text{Po}(2.5). Find P(X≥3)P(X\ge3), correct to 3 significant figures.

Sign in or create a free account to check answers, get hints and track your progress.

Salam Academy Original Practice · Proposed mark scheme
SA-9709-P6-PO1-0022 marksL2 StandardCalculatorProbabilities
X∼Po(4.5)X\sim\text{Po}(4.5). Find P(X<3)P(X<3), correct to 3 significant figures.

Sign in or create a free account to check answers, get hints and track your progress.

Salam Academy Original Practice · Proposed mark scheme
SA-9709-P6-PO1-0032 marksL2 StandardCalculatorProbabilities
X∼Po(1.8)X\sim\text{Po}(1.8). Find P(X>1)P(X>1), correct to 3 significant figures.

Sign in or create a free account to check answers, get hints and track your progress.

Salam Academy Original Practice · Proposed mark scheme
SA-9709-P6-PO1-0063 marksL3 ExamCalculatorProbabilities
X∼Po(3)X\sim\text{Po}(3). Find P(2≤X≤4)P(2\le X\le4), correct to 3 significant figures.

Sign in or create a free account to check answers, get hints and track your progress.

Salam Academy Original Practice · Proposed mark scheme