Mathematics (AS & A Level) · May / June 2024 · Paper 61 · Question 3
9709
As printed in the paper
The question as text
The time taken in minutes for a certain daily train journey has a normal distribution with standard deviation 5.8 . For a random sample of 20 days the journey times were noted and the mean journey time was found to be 81.5 minutes.
Read automatically from the paper; the printed page above is exact.
Show the answer and mark scheme
3(a)[3]
3(b)[1]
3(c)[2]
Make a free account to save your answers and see your weak topics and ask the AI why a wrong answer is wrong.