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2 Statistics

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Question 202

Two independent sensors have false-alarm probabilities 0.05 and 0.08 on any inspection.

a.

Find the probability that exactly one sensor gives a false alarm.

[3]
b.

Find the probability that neither sensor gives a false alarm.

[1]
c.

In 500 inspections, find the expected number on which at least one sensor gives a false alarm.

[2]
Markscheme

2 Statistics Questions

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

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