CIE A level Math -Probability & Statistics 2: 6.5 Hypothesis tests : formulate hypotheses: Exam Style Questions Paper 6


 Jill shoots arrows at a target. Last week, 65% of her shots hit the target. This week Jill claims that she has improved. Out of her first 20 shots this week, she hits the target with 18 shots. Assuming shots are independent, test Jill’s claim at the 1% significance level. [5]