When practising her tennis serves, the probability that any one of Gemma's serves is in court is 0.3.
Gemma serves 4 times.
Assuming a binomial distribution, calculate the probability that exactly 2 of these serves are in court.
You may use (p+q)4=p4+4p3q+6p2q2+4pq3+q4(p + q)^4 = p^4 + 4p^3q + 6p^2q^2 + 4pq^3 + q^4(p+q)4=p4+4p3q+6p2q2+4pq3+q4.
Practise AQA GCSE Statistics The Binomial Distribution with exam-style questions for Foundation and Higher tier. 4 questions, matched to the AQA GCSE Statistics (8382) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.