The recovery time of biological tissue following a specific laser treatment, T T\,T milliseconds, is modeled by a normal distribution such that T∼N(140,152)T \sim N(140, 15^2)T∼N(140,152).
Find P(T<110)P(T < 110)P(T<110).
In a batch of 600 treatment sessions, determine the expected number of sessions where the recovery time is less than 110 ms.
Determine the value of ttt, to 2 decimal places, such that P(T<t∣T>110)=0.8250P(T < t \mid T > 110) = 0.8250P(T<t∣T>110)=0.8250.
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.
