Skip to content
MathsGenie logo
Quick links
Open app

Course home

  1. A Level
  2. Maths OCR
  3. Question bank

2.4 Statistical Distributions

EasyMediumHard
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869
Question 59

The 100m race times an athlete records are normally distributed.
16% of the time the athlete is faster than 10 seconds.
23% of the time the athlete is slower than 11 seconds.

Find the mean and standard deviation of the times.

[6]

2.4 Statistical Distributions Questions

  1. A Level
  2. /Maths
  3. /2.4 Statistical Distributions