The probability of Harry being late for school is 0.1. Over a term of 30 days find the probability that Harry is late:
Exactly one time
More than four times
Less than three times. Hence find the probability that Harry is late at least three times.
153 exam-style questions on Edexcel A Level Maths Hypothesis Testing, covering 7.1 Hypothesis Testing, 7.2 Finding Critical Values, 7.3 One-Tailed Tests, and 7.4 Two-Tailed Tests. Each one has a worked solution and a mark scheme showing where the marks go.