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2 Statistics

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Question 142

The random variable X X\,X has the distribution X∼N(μ,σ2)X \sim N(\mu, \sigma^{2})X∼N(μ,σ2).

Identify the values of x x\,x at which the graph of the probability density function of X X\,X has its points of inflection.

Tick one box.

A

x=μx = \mux=μ only

B

x=μ±σx = \mu \pm \sigmax=μ±σ

C

x=μ±2σx = \mu \pm 2\sigmax=μ±2σ

D

x=0x = 0x=0 and x=μx = \mux=μ

Markscheme

2 Statistics Questions

  1. A Level
  2. /Maths
  3. /2 Statistics

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