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2 Statistics

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Question 183

A random variable X X\,X has the binomial distribution B(200,0.4)B(200, 0.4)B(200,0.4).

The distribution of X X\,X is to be approximated by a normal distribution.

a.

State the mean and the variance of the normal distribution that should be used.

[2]
b.

Give one reason why a normal approximation is reasonable in this case.

[1]
Markscheme

2 Statistics Questions

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

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