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Question 129

The random variable X X\,X has distribution N(20,25)N(20,25)N(20,25).

a.

Find P(X>25)P(X>25)P(X>25).

[1]
b.

Find P(X<14.8)P(X<14.8)P(X<14.8).

[1]
c.

Find P(13<X<19)P(13<X<19)P(13<X<19).

[1]
Markscheme

2 Statistics Questions

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

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