A lightbulb manufacturer claims that only 2%2\%2% of its LED bulbs are defective. To investigate this claim, a quality control manager selects a random sample of 150150150 bulbs and finds that 888 are defective.
Use a suitable approximation to test, at the 5%5\%5% level of significance, whether the manufacturer is understating the proportion of defective bulbs. State your hypotheses clearly.
Practise Edexcel A Level Maths Approximating a Binomial Distribution with exam-style questions for A Level Maths. 68 questions, matched to the Edexcel A Level Maths (9MA0) specification and written in Paper 1, Paper 2 and Paper 3 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.
