A factory produces bags of flour. The weight of flour, WWW grams, in a bag can be modelled by a normal distribution with mean 505 grams and standard deviation 4 grams.
Find P(W<498)P(W < 498)P(W<498).
Find the value of www such that P(505<W<w)=0.35P(505 < W < w) = 0.35P(505<W<w)=0.35.
Two bags of flour are selected at random.
Find the probability that exactly one of the bags contains between 505 grams and www grams of flour.
Practise Edexcel A Level Maths Finding Probabilities for Normal Distributions with exam-style questions for A Level Maths. 80 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.
