This Year 13 conditional probability and the Normal distribution quiz has 10 short questions for pupils aged 17-18. Type your answer, check it straight away and read the explanation when you get one wrong.
Year 13 conditional probability and the Normal distribution quiz: the 10 questions
- Formula for P(A given B)?Definition.
- If A, B independent, P(A)=0.2, P(B)=0.5, find P(A and B).0.2 x 0.5.
- Mean of the standard Normal distribution?N(0,1).
- X~N(20,5^2). Standardised value for 30?(30-20)/5.
- P(Z>0)?Symmetry.
- Mean of B(50,0.4)?np.
- Variance of B(50,0.4)?np(1-p)=50x0.4x0.6.
- Approximately what percentage of Normal data lies within 1 sd?Rule.
- P(A|B) if P(A and B)=0.12, P(B)=0.4?0.12/0.4.
- Is it valid to use the Normal distribution for strongly skewed data? (yes or no)Symmetry needed.
How to use this Year 13 conditional probability and the Normal distribution quiz
First, answer every question without a calculator unless the question says so. Then check your answer and read the short explanation. If you get fewer than 7 right, revise the conditional probability and the Normal distribution lesson and try again later. After that, try the multiple choice questions or the conditional probability and the Normal distribution worksheet.
Finally, take this quiz again before a test, because quick retrieval helps you remember. Moreover, all the pages of this chapter work together, so you can move between them at any time. For example, many pupils read the lesson on Monday, practise on Wednesday and test themselves on Friday.


















