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2 Statistics

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Question 150

The probability that a component is faulty is 0.04, independently of every other component. A batch consists of 25 components.

a.

Find the probability that a batch contains exactly 2 faulty components.

[2]
b.

Find the probability that a batch contains more than 2 faulty components.

[2]
c.

Two batches are taken independently. Find the probability that exactly one of the two batches contains more than 2 faulty components.

[3]
Markscheme

2 Statistics Questions

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

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