The owner of a bakery claims that the mean weight of their sourdough loaves is 500 g. A random sample of 64 loaves is taken, and their weights have a mean of 494.5 g and a standard deviation, sss, of 22 g.
Stating your hypotheses clearly and using a 5% level of significance, test whether or not the owner's claim is supported by the data.
Explain the relevance of the Central Limit Theorem to your calculation in part (a).
State an additional assumption regarding the standard deviation that was made to carry out the test in part (a).
Practise Edexcel A Level Maths Hypothesis Testing with the Normal Distribution with exam-style questions for A Level Maths. 132 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.
