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2 Statistics

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Question 141

A random variable Z Z\,Z has probability function P(Z=z)=k(z+1)P(Z=z)=k(z+1)P(Z=z)=k(z+1) for z=0,1,2,3,4z=0,1,2,3,4z=0,1,2,3,4.

a.

Find kkk.

[2]
b.

Find P(Z≥3)P(Z\geq3)P(Z≥3).

[2]
c.

Construct a table for F(z)=P(Z≤z)F(z)=P(Z\leq z)F(z)=P(Z≤z) at z=0,1,2,3,4z=0,1,2,3,4z=0,1,2,3,4.

[2]
Markscheme

2 Statistics Questions

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

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