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ScotlandApplications of MathematicsQuick questions

Statistics

Quick questions on Probability, risk and making decisions - SQA National 5 Applications of Maths

3short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.

What is q1?
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A fair coin is tossed. Find the probability of heads. [1 mark]
What is q2?
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P(late)=0.15P(\text{late}) = 0.15. Find the probability of not being late. [2 marks]
What is q3?
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P(prize)=0.1P(\text{prize}) = 0.1 and 200200 tickets are bought. Find the expected number of prizes. [2 marks]

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