Skip to content

Course home

Sign up

4.5.1 Statistical distributions (A-level only)

EasyMediumHard
1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071727374757677787980818283848586878889909192939495
Question 84

The time, TTT minutes, required for a specific bacterial culture to double in population is modelled by a normal distribution such that T∼N(μ,σ2)T \sim \text{N}(\mu, \sigma^2)T∼N(μ,σ2).

Given that P(T<145)=0.74P(T < 145) = 0.74P(T<145)=0.74, determine:

a.

P(T>145)P(T > 145)P(T>145)

[1]
b.

P(μ<T<145)P(\mu < T < 145)P(μ<T<145)

[2]
c.

P(T>μ∣T<145)P(T > \mu \mid T < 145)P(T>μ∣T<145)

[2]
Markscheme

4.5.1 Statistical distributions (A-level only) Questions

  1. A Level
  2. /Maths
  3. /4.5.1 Statistical distributions (A-level only)

225 exam-style questions on CCEA A Level Maths 4.5.1 Statistical distributions (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.

Question bank